diff --git a/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions.ts b/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions.ts
index e0de2b94..bc926c9d 100644
--- a/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions.ts
+++ b/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions.ts
@@ -93,25 +93,22 @@ export async function addReplyAction({
 export interface UpdateCommentActionPayload {
   applicationId: ApplicationId;
   commentId: Comment["id"];
-  content: Comment["content"];
+  newContent: Comment["content"];
 }
 
 export async function updateCommentAction({
   applicationId,
   commentId,
-  content,
+  newContent,
 }: UpdateCommentActionPayload) {
-  const { userId, validationErrorMessage } =
-    await canEditComment(applicationId);
+  const { validationErrorMessage } = await canEditComment(applicationId);
 
   if (typeof validationErrorMessage !== "undefined") {
     throw new Error(validationErrorMessage);
   }
 
   await updateComment({
-    content,
-    applicationId,
-    userId,
-    id: commentId,
+    newContent,
+    commentId,
   });
 }
diff --git a/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentEditForm.tsx b/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentEditForm.tsx
index 87a09c1c..af9ab15c 100644
--- a/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentEditForm.tsx
+++ b/src/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentEditForm.tsx
@@ -5,7 +5,6 @@ import { useForm } from "react-hook-form";
 
 import { ApplicationWithComments } from "@/types/Application";
 import { type Comment } from "@/types/Comment";
-import { formatTime } from "@/lib/dates";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Editor } from "@/components/ui/editor/editor";
@@ -44,13 +43,10 @@ export function CommentEditForm({
   });
 
   const handleSubmit = form.handleSubmit(async ({ content }) => {
-    const appendContent = `\n\nEdited ${formatTime(new Date())}:\n\n${content}`;
-    const submitContent = comment.content + appendContent;
-
     await updateCommentAction({
       applicationId: application.id,
       commentId: comment.id,
-      content: submitContent,
+      newContent: content,
     });
     form.reset();
     onEdit();
diff --git a/src/drizzle/queries/comments.ts b/src/drizzle/queries/comments.ts
index a8c1828e..25421435 100644
--- a/src/drizzle/queries/comments.ts
+++ b/src/drizzle/queries/comments.ts
@@ -1,13 +1,28 @@
 import { db } from "@/drizzle/db";
 import { Comment, Review } from "@/drizzle/schema";
-import { eq } from "drizzle-orm";
+import { eq, sql } from "drizzle-orm";
+
+import { formatTime } from "@/lib/dates";
 
 export async function insertComment(data: typeof Comment.$inferInsert) {
   return db.insert(Comment).values(data);
 }
 
-export async function updateComment(data: typeof Comment.$inferInsert) {
-  return db.update(Comment).set(data).where(eq(Comment.id, data.id!));
+interface UpdateCommentArgs {
+  commentId: string;
+  newContent: string;
+}
+
+export async function updateComment({
+  commentId,
+  newContent,
+}: UpdateCommentArgs) {
+  const formattedContent = `\n\nEdited ${formatTime(new Date())}:\n\n${newContent}`;
+
+  return db
+    .update(Comment)
+    .set({ content: sql`${Comment.content} || ${formattedContent}` })
+    .where(eq(Comment.id, commentId));
 }
 
 export async function insertCommentAsReview(data: typeof Comment.$inferInsert) {
diff --git a/tests/helpers/queries.ts b/tests/helpers/queries.ts
index 6ffd0084..8b940c1e 100644
--- a/tests/helpers/queries.ts
+++ b/tests/helpers/queries.ts
@@ -2,6 +2,7 @@ import { db } from "@/drizzle/db";
 import {
   Application,
   Category,
+  Comment,
   Moderator,
   Reviewer,
   User,
@@ -125,3 +126,24 @@ export async function createApplication({
     teamSummary: "teamSummary",
   });
 }
+
+interface CreateCommentArgs {
+  commentId: string;
+  applicationId: string;
+  userId: string;
+  content: string;
+}
+
+export async function createComment({
+  commentId,
+  applicationId,
+  userId,
+  content,
+}: CreateCommentArgs) {
+  await db.insert(Comment).values({
+    id: commentId,
+    applicationId,
+    content,
+    userId,
+  });
+}
diff --git a/tests/unit/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/updateCommentAction.test.ts b/tests/unit/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/updateCommentAction.test.ts
index 711af42c..72db5ed9 100644
--- a/tests/unit/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/updateCommentAction.test.ts
+++ b/tests/unit/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/updateCommentAction.test.ts
@@ -5,6 +5,7 @@ import {
   createApplication,
   createBlocked,
   createCategory,
+  createComment,
   createModerator,
   createReviewer,
   createUser,
@@ -13,10 +14,8 @@ import {
 } from "tests/helpers/queries";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
-import {
-  addCommentAction,
-  updateCommentAction,
-} from "@/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions";
+import { formatTime } from "@/lib/dates";
+import { updateCommentAction } from "@/app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/commentActions";
 
 const userId = "user";
 const anotherUserId = "anotherUser";
@@ -25,18 +24,29 @@ const applicationId = "f8e46fab-f2c4-4c46-85ca-9e5cbf716d39";
 const categoryId = "7979fbc1-1a84-4b75-8f7e-bea6f9bf0a99";
 const commentId = "5c8c268c-3a34-43ec-b8b7-58a0cbe9adde";
 
-const addCommentActionArgs = {
-  applicationId,
-  waveId,
-  content: "Original comment",
-};
+const initialCommentContent = "Original comment";
 
 const updateCommentActionArgs = {
   applicationId,
   commentId,
-  content: "Updated comment",
+  newContent: "Updated comment",
 };
 
+const expectedContent = `${initialCommentContent}
+
+Edited ${formatTime(new Date())}:
+
+${updateCommentActionArgs.newContent}`;
+
+async function createUserComment() {
+  createComment({
+    content: initialCommentContent,
+    applicationId,
+    commentId,
+    userId,
+  });
+}
+
 describe("app/waves/[waveId]/applications/[applicationId]/comments/addCommentForm/updateCommentAction", () => {
   beforeEach(async () => {
     await createUser(anotherUserId);
@@ -90,91 +100,46 @@ describe("app/waves/[waveId]/applications/[applicationId]/comments/addCommentFor
 
     it("device verified - own application", async () => {
       await createUser(userId);
-      mockUserSession({ userId, credentialType: "device" });
-      const userApplicationId = "d14f44cd-7a64-4b1c-9731-47cee811e149";
-      await createApplication({
-        applicationId: userApplicationId,
-        categoryId,
-        userId,
-        waveId,
-        isDraft: false,
-      });
-
-      await addCommentAction({
-        ...addCommentActionArgs,
-        applicationId: userApplicationId,
-      });
-
-      const comments = await db.query.Comment.findMany();
-      expect(comments).toHaveLength(1);
-
-      const comment = comments[0];
-
-      await updateCommentAction({
-        ...updateCommentActionArgs,
-        applicationId: userApplicationId,
-        commentId: comment.id,
-      });
+      mockUserSession({ userId, credentialType: "orb" });
+      await createUserComment();
+
+      await updateCommentAction(updateCommentActionArgs);
 
       const updatedComments = await db.query.Comment.findMany();
-      expect(updatedComments[0].content).toBe(updateCommentActionArgs.content);
+      expect(updatedComments[0].content).toBe(expectedContent);
     });
 
     it("orb verified", async () => {
       await createUser(userId);
       mockUserSession({ userId, credentialType: "orb" });
+      await createUserComment();
 
-      await addCommentAction(addCommentActionArgs);
-
-      const comments = await db.query.Comment.findMany();
-      expect(comments).toHaveLength(1);
-
-      const comment = comments[0];
-      await updateCommentAction({
-        ...updateCommentActionArgs,
-        commentId: comment.id,
-      });
+      await updateCommentAction(updateCommentActionArgs);
 
       const updatedComments = await db.query.Comment.findMany();
-      expect(updatedComments[0].content).toBe(updateCommentActionArgs.content);
+      expect(updatedComments[0].content).toBe(expectedContent);
     });
 
     it("reviewer", async () => {
       await createReviewer(userId);
       mockUserSession({ userId, credentialType: "orb" });
+      await createUserComment();
 
-      await addCommentAction(addCommentActionArgs);
-
-      const comments = await db.query.Comment.findMany();
-      expect(comments).toHaveLength(1);
-
-      const comment = comments[0];
-      await updateCommentAction({
-        ...updateCommentActionArgs,
-        commentId: comment.id,
-      });
+      await updateCommentAction(updateCommentActionArgs);
 
       const updatedComments = await db.query.Comment.findMany();
-      expect(updatedComments[0].content).toBe(updateCommentActionArgs.content);
+      expect(updatedComments[0].content).toBe(expectedContent);
     });
 
     it("moderator", async () => {
       await createModerator(userId);
       mockUserSession({ userId, credentialType: "orb" });
+      await createUserComment();
 
-      await addCommentAction(addCommentActionArgs);
-
-      const comments = await db.query.Comment.findMany();
-      expect(comments).toHaveLength(1);
-
-      const comment = comments[0];
-      await updateCommentAction({
-        ...updateCommentActionArgs,
-        commentId: comment.id,
-      });
+      await updateCommentAction(updateCommentActionArgs);
 
       const updatedComments = await db.query.Comment.findMany();
-      expect(updatedComments[0].content).toBe(updateCommentActionArgs.content);
+      expect(updatedComments[0].content).toBe(expectedContent);
     });
   });
 });