diff --git a/openapi-cli/src/test/java/io/ballerina/openapi/generators/common/DocCommenTests.java b/openapi-cli/src/test/java/io/ballerina/openapi/generators/common/DocCommenTests.java
index e8dedb1ba..193be15b1 100644
--- a/openapi-cli/src/test/java/io/ballerina/openapi/generators/common/DocCommenTests.java
+++ b/openapi-cli/src/test/java/io/ballerina/openapi/generators/common/DocCommenTests.java
@@ -1,15 +1,28 @@
 package io.ballerina.openapi.generators.common;
 
+import io.ballerina.openapi.core.generators.common.GeneratorUtils;
+import org.testng.Assert;
 import org.testng.annotations.Test;
 
 public class DocCommenTests {
     @Test()
     public void testForFunctionReplaceContentWithinBrackets() {
-        // need ot improve regex to capture abc.json
-//        Assert.assertEquals("admin/api/ZZZ/customers/XXX/abc.json",
+        // todo : need ot improve regex to capture `.` in string ex: abc.json
+//        Assert.assertEquals("admin/api/ZZZ/customers/XXX/ZZZ",
 //        GeneratorUtils.replaceContentWithinBrackets("admin/api/2021-10/customers/{customer_id}/abc.json", "XXX"));
-//        Assert.assertEquals("admin/api/ZZZ/customers/XXX/abc.json",
-//        GeneratorUtils.replaceContentWithinBrackets(
+//        Assert.assertEquals("admin/api/ZZZ/customers/XXX/ZZZ",
+//                GeneratorUtils.replaceContentWithinBrackets(
 //        "admin/api/'2021\\-10/customers/[string customer_id]/abc\\.json", "XXX"));
+
+        Assert.assertEquals("/user/ssh_signing_keys/XXX", GeneratorUtils.replaceContentWithinBrackets(
+                "/user/ssh_signing_keys/{ssh_signing_key_id}", "XXX"));
+        Assert.assertEquals("/user/gpg_keys/XXX", GeneratorUtils.replaceContentWithinBrackets(
+                "/user/gpg_keys/{gpg_key_id}", "XXX"));
+
+        Assert.assertEquals(GeneratorUtils.replaceContentWithinBrackets("user/gpg_keys/[int gpg_key_id]",
+                "XXX"), "user/gpg_keys/XXX");
+        Assert.assertEquals(GeneratorUtils.replaceContentWithinBrackets(
+                "user/ssh_signing_keys/[int ssh_signing_key_id]", "XXX"),
+                "user/ssh_signing_keys/XXX");
     }
 }
diff --git a/openapi-core/src/main/java/io/ballerina/openapi/core/generators/common/GeneratorUtils.java b/openapi-core/src/main/java/io/ballerina/openapi/core/generators/common/GeneratorUtils.java
index 6a8c87cca..44bf83443 100644
--- a/openapi-core/src/main/java/io/ballerina/openapi/core/generators/common/GeneratorUtils.java
+++ b/openapi-core/src/main/java/io/ballerina/openapi/core/generators/common/GeneratorUtils.java
@@ -994,19 +994,26 @@ public static String replaceContentWithinBrackets(String input, String replaceme
         input = sb.toString();
         if (!input.startsWith(".")) {
             //Pattern to ignore especial characters
-            //todo: need to improve the regex pattern to capture  abc.json
-            Pattern pattern2 = Pattern.compile("/(?=[^/]*[^a-zA-Z0-9/])(.*?)(?=/)");
+            Pattern pattern2 = Pattern.compile("/(?=[^/]*[^a-zA-Z0-9_/])(.*?)(?=/)");
             Matcher matcher2 = pattern2.matcher(input);
             StringBuffer sb2 = new StringBuffer();
             while (matcher2.find()) {
-                matcher2.appendReplacement(sb2, "/" + "ZZZ");
+                matcher2.appendReplacement(sb2, "/ZZZ");
             }
             matcher2.appendTail(sb2);
+            //todo: need to improve the regex pattern to capture  abc.json
+//            input = sb2.toString();
+//            Pattern pattern3 = Pattern.compile("\\..*?[^/]*");
+//            Matcher matcher3 = pattern3.matcher(input);
+//            StringBuffer sb3 = new StringBuffer();
+//            while (matcher3.find()) {
+//                matcher3.appendReplacement(sb3, "/ZZZ");
+//            }
+//            matcher3.appendTail(sb3);
             return sb2.toString();
         } else {
             return input;
         }
-
     }
 
     public static TypeDescriptorNode generateStatusCodeTypeInclusionRecord(String code, ApiResponse response,