diff --git a/src/main/java/gr/gousiosg/javacg/stat/MethodVisitor.java b/src/main/java/gr/gousiosg/javacg/stat/MethodVisitor.java
index 21100420..b4c55ca2 100644
--- a/src/main/java/gr/gousiosg/javacg/stat/MethodVisitor.java
+++ b/src/main/java/gr/gousiosg/javacg/stat/MethodVisitor.java
@@ -53,8 +53,8 @@ public MethodVisitor(MethodGen m, JavaClass jc) {
         visitedClass = jc;
         mg = m;
         cp = mg.getConstantPool();
-        format = "M:" + visitedClass.getClassName() + ":" + mg.getName() + "(" + argumentList(mg.getArgumentTypes()) + ")"
-            + " " + "(%s)%s:%s(%s)";
+        format = "M:" + visitedClass.getClassName() + ":" + mg.getName() + "(" + argumentList(mg.getArgumentTypes()) + ")" + mg.getReturnType().toString()
+            + " " + "(%s)%s:%s(%s)%s";
     }
 
     private String argumentList(Type[] arguments) {
@@ -91,27 +91,27 @@ private boolean visitInstruction(Instruction i) {
 
     @Override
     public void visitINVOKEVIRTUAL(INVOKEVIRTUAL i) {
-        methodCalls.add(String.format(format,"M",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
+        methodCalls.add(String.format(format,"M",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp)),i.getReturnType(cp)));
     }
 
     @Override
     public void visitINVOKEINTERFACE(INVOKEINTERFACE i) {
-        methodCalls.add(String.format(format,"I",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
+        methodCalls.add(String.format(format,"I",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp)),i.getReturnType(cp)));
     }
 
     @Override
     public void visitINVOKESPECIAL(INVOKESPECIAL i) {
-        methodCalls.add(String.format(format,"O",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
+        methodCalls.add(String.format(format,"O",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp)),i.getReturnType(cp)));
     }
 
     @Override
     public void visitINVOKESTATIC(INVOKESTATIC i) {
-        methodCalls.add(String.format(format,"S",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
+        methodCalls.add(String.format(format,"S",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp)),i.getReturnType(cp)));
     }
 
     @Override
     public void visitINVOKEDYNAMIC(INVOKEDYNAMIC i) {
         methodCalls.add(String.format(format,"D",i.getType(cp),i.getMethodName(cp),
-                argumentList(i.getArgumentTypes(cp))));
+                argumentList(i.getArgumentTypes(cp)),i.getReturnType(cp)));
     }
 }