diff --git a/idea/src/org/jetbrains/jet/codegen/ExpressionCodegen.java b/idea/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
index 009598833df..462d86f8232 100644
--- a/idea/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
+++ b/idea/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
@@ -16,7 +16,6 @@ import org.jetbrains.jet.lang.resolve.BindingContext;
 import org.jetbrains.jet.lang.types.JetStandardClasses;
 import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.TypeProjection;
-import org.jetbrains.jet.lang.types.TypeUtils;
 import org.jetbrains.jet.lexer.JetTokens;
 import org.objectweb.asm.Label;
 import org.objectweb.asm.MethodVisitor;
@@ -1447,8 +1446,7 @@ public class ExpressionCodegen extends JetVisitor {
     private void pushTypeArguments(JetCall expression) {
         for (JetTypeProjection jetTypeArgument : expression.getTypeArguments()) {
             JetType typeArgument = bindingContext.resolveTypeReference(jetTypeArgument.getTypeReference());
-            // TODO is the makeNullable() call correct here?
-            ClassCodegen.newTypeInfo(v, typeArgument.isNullable(), typeMapper.mapType(TypeUtils.makeNullable(typeArgument)));
+            generateTypeInfo(typeArgument);
         }
     }
 
diff --git a/idea/testData/codegen/typeInfo/forwardTypeParameter.jet b/idea/testData/codegen/typeInfo/forwardTypeParameter.jet
new file mode 100644
index 00000000000..2e78cd3ae9c
--- /dev/null
+++ b/idea/testData/codegen/typeInfo/forwardTypeParameter.jet
@@ -0,0 +1,12 @@
+class Foo() { }
+class Bar() { }
+
+fun isInstance<T>(obj: Any?) = obj is T
+
+fun isInstance2<T>(obj: Any?) = isInstance<T>(obj)
+
+fun box(): String {
+  if (! isInstance2<Foo>(Foo())) return "fail 1"
+  if (isInstance2<Bar>(Foo())) return "fail 2"
+  return "OK"
+}
diff --git a/idea/tests/org/jetbrains/jet/codegen/TypeInfoTest.java b/idea/tests/org/jetbrains/jet/codegen/TypeInfoTest.java
index 88db7e87331..e44854c2a09 100644
--- a/idea/tests/org/jetbrains/jet/codegen/TypeInfoTest.java
+++ b/idea/tests/org/jetbrains/jet/codegen/TypeInfoTest.java
@@ -100,6 +100,10 @@ public class TypeInfoTest extends CodegenTestCase {
         blackBoxFile("typeInfo/genericFunction.jet");
     }
 
+    public void testForwardTypeParameter() throws Exception {
+        blackBoxFile("typeInfo/forwardTypeParameter.jet");
+    }
+
     private Runnable newRunnable() {
         return new Runnable() {
             @Override