diff --git a/compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/JvmCodeGenUtil.java b/compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/JvmCodeGenUtil.java
index d7c94ff5c2fc..72bd2946d647 100644
--- a/compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/JvmCodeGenUtil.java
+++ b/compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/JvmCodeGenUtil.java
@@ -202,7 +202,7 @@ public static String cleanupPathSeparators(String name) {
     }
 
     public static String rewriteVirtualCallTypeName(String value, BType objectType) {
-        return Utils.encodeFunctionIdentifier(cleanupObjectTypeName(value, objectType));
+        return Utils.encodeFunctionIdentifier(cleanupObjectTypeName(value, getImpliedType(objectType)));
     }
 
     private static String cleanupBalExt(String name) {
@@ -518,23 +518,18 @@ public static String generateReturnType(BType bType) {
         }
     }
 
-    static String cleanupObjectTypeName(String typeName, BType objectType) {
-        if (!objectType.tsymbol.name.value.equals("") && typeName.startsWith(objectType.tsymbol.name.value)) {
-            typeName = typeName.replace(objectType.tsymbol.name.value + ".", "").trim();
+    static String cleanupObjectTypeName(String callName, BType objectType) {
+        // For attached functions from another module the call name will be in the format `objectTypeName.funcName`.
+        // We need to remove the type name.
+        if (!objectType.tsymbol.name.value.isEmpty() && callName.startsWith(objectType.tsymbol.name.value)) {
+            callName = callName.replace(objectType.tsymbol.name.value + ".", "").trim();
         }
-        int index = typeName.lastIndexOf("."); // Internal type names can contain dots hence use the `lastIndexOf`
-        int typeNameLength = typeName.length();
-        if (index > 1 && typeName.charAt(index - 1) == '\\') { // Methods can contain escaped characters
-            return typeName;
-        } else if (index > 0 && index != typeNameLength - 1) { // Resource method name can contain . at the end 
-            return typeName.substring(index + 1);
-        } else if (index > 0) {
-            // We will reach here for resource methods eg: (MyClient8.$get$.)
-            index = typeName.substring(0, typeNameLength - 1).lastIndexOf("."); // Index of the . before the last .
-            return typeName.substring(index + 1);
+        // For attached functions from another module where the type is an anonType, the call name will be in
+        // the format `(objectTypeName).funcName`. We need to remove the type name.
+        if (callName.startsWith("(") && callName.contains(").")) {
+            callName = callName.substring(callName.indexOf(").") + 2);
         }
-        
-        return typeName;
+        return callName;
     }
 
     public static void loadChannelDetails(MethodVisitor mv, List<BIRNode.ChannelDetails> channels,