diff --git a/scripts/api-diff.js b/scripts/api-diff.js
index 5297e5e..041da80 100644
--- a/scripts/api-diff.js
+++ b/scripts/api-diff.js
@@ -180,34 +180,34 @@ function findComponentUsage(details, componentName) {
     
     // Check parameters
     if (details.parameters) {
-        const hasComponent = details.parameters.some(p => 
-            (p.$ref && schemaReferencesComponent({ $ref: p.$ref }, componentName)) ||
-            (p.schema && schemaReferencesComponent(p.schema, componentName))
-        );
+        const hasComponent = details.parameters.some(p => {
+            // Check direct parameter reference
+            if (p.$ref && p.$ref.includes(`/parameters/${componentName}`)) return true;
+            // Check schema reference if it exists
+            if (p.schema && p.schema.$ref && p.schema.$ref.includes(`/schemas/${componentName}`)) return true;
+            return false;
+        });
         if (hasComponent) usage.push('parameters');
     }
     
     // Check requestBody
     if (details.requestBody) {
-        let hasComponent = false;
-        if (details.requestBody.$ref) {
-            hasComponent = schemaReferencesComponent({ $ref: details.requestBody.$ref }, componentName);
+        if (details.requestBody.$ref && details.requestBody.$ref.includes(componentName)) {
+            usage.push('requestBody');
         } else if (details.requestBody.content) {
-            hasComponent = Object.values(details.requestBody.content).some(c => 
-                c.schema && schemaReferencesComponent(c.schema, componentName)
-            );
+            const hasComponent = Object.values(details.requestBody.content).some(c => 
+                c.schema && c.schema.$ref && c.schema.$ref.includes(`/schemas/${componentName}`));
+            if (hasComponent) usage.push('requestBody');
         }
-        if (hasComponent) usage.push('requestBody');
     }
     
     // Check responses
     if (details.responses) {
-        const hasComponent = Object.entries(details.responses).some(([code, r]) => {
-            if (r.$ref) return schemaReferencesComponent({ $ref: r.$ref }, componentName);
-            if (r.content) {
-                return Object.values(r.content).some(c => 
-                    c.schema && schemaReferencesComponent(c.schema, componentName)
-                );
+        const hasComponent = Object.entries(details.responses).some(([code, response]) => {
+            if (response.$ref && response.$ref.includes(`/responses/${componentName}`)) return true;
+            if (response.content) {
+                return Object.values(response.content).some(c => 
+                    c.schema && c.schema.$ref && c.schema.$ref.includes(`/schemas/${componentName}`));
             }
             return false;
         });
diff --git a/tests/fixtures/modified-parameter-component/current.json b/tests/fixtures/modified-parameter-component/current.json
new file mode 100644
index 0000000..654b487
--- /dev/null
+++ b/tests/fixtures/modified-parameter-component/current.json
@@ -0,0 +1,71 @@
+{
+  "openapi": "3.0.0",
+  "info": {
+    "title": "Test API",
+    "description": "A sample API for testing"
+  },
+  "servers": [
+    {
+      "url": "https://api.example.com/v1"
+    }
+  ],
+  "paths": {
+    "/user/{userId}": {
+      "get": {
+        "summary": "Get a user by ID",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/UserId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A user object",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/User"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "User not found"
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "parameters": {
+      "UserId": {
+        "name": "userID",
+        "in": "path",
+        "required": true,
+        "schema": {
+          "type": "string"
+        }
+      }
+    },
+    "schemas": {
+      "User": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "email": {
+            "$ref": "#/components/schemas/Email"
+          }
+        }
+      },
+      "Email": {
+        "type": "string",
+        "format": "email"
+      }
+    }
+  }
+}
diff --git a/tests/fixtures/modified-parameter-component/expected.md b/tests/fixtures/modified-parameter-component/expected.md
new file mode 100644
index 0000000..610c16d
--- /dev/null
+++ b/tests/fixtures/modified-parameter-component/expected.md
@@ -0,0 +1,3 @@
+## Modified
+- [GET] `/user/{userId}`
+  - `UserId` modified in parameters
diff --git a/tests/fixtures/modified-parameter-component/previous.json b/tests/fixtures/modified-parameter-component/previous.json
new file mode 100644
index 0000000..2c13fb7
--- /dev/null
+++ b/tests/fixtures/modified-parameter-component/previous.json
@@ -0,0 +1,71 @@
+{
+  "openapi": "3.0.0",
+  "info": {
+    "title": "Test API",
+    "description": "A sample API for testing"
+  },
+  "servers": [
+    {
+      "url": "https://api.example.com/v1"
+    }
+  ],
+  "paths": {
+    "/user/{userId}": {
+      "get": {
+        "summary": "Get a user by ID",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/UserId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A user object",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/User"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "User not found"
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "parameters": {
+      "UserId": {
+        "name": "userId",
+        "in": "path",
+        "required": true,
+        "schema": {
+          "type": "string"
+        }
+      }
+    },
+    "schemas": {
+      "User": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "email": {
+            "$ref": "#/components/schemas/Email"
+          }
+        }
+      },
+      "Email": {
+        "type": "string",
+        "format": "email"
+      }
+    }
+  }
+}