diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/expressions/TypesUtil.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/expressions/TypesUtil.java
index b280f86159cf..281c919ff8f5 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/expressions/TypesUtil.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/expressions/TypesUtil.java
@@ -216,6 +216,8 @@ public class TypesUtil {
   public static boolean isAssignableByMethodCallConversion(PsiType lType, PsiType rType, PsiManager manager, GlobalSearchScope scope) {
     if (lType == null || rType == null) return false;
 
+    if (lType.equalsToText(JAVA_LANG_STRING)) return true;
+    
     if (isNumericType(lType) && isNumericType(rType)) {
       lType = unboxPrimitiveTypeWrapper(lType);
       if (lType.equalsToText(JAVA_MATH_BIG_DECIMAL)) lType = PsiType.DOUBLE;
diff --git a/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/GroovyHighlightingTest.java b/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/GroovyHighlightingTest.java
index 971ba82df0e1..4bc7ae93ff5a 100644
--- a/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/GroovyHighlightingTest.java
+++ b/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/GroovyHighlightingTest.java
@@ -187,4 +187,6 @@ public class GroovyHighlightingTest extends LightCodeInsightFixtureTestCase {
   public void testFQNJavaClassesUsages() throws Exception {
     doTest();
   }
+
+  public void testGstringAssignableToString() throws Exception{doTest();} 
 }
\ No newline at end of file
diff --git a/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/resolve/ResolveMethodTest.java b/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/resolve/ResolveMethodTest.java
index 4756cfd7f138..d566a056d4ad 100644
--- a/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/resolve/ResolveMethodTest.java
+++ b/plugins/groovy/test/org/jetbrains/plugins/groovy/lang/resolve/ResolveMethodTest.java
@@ -393,7 +393,7 @@ public class ResolveMethodTest extends GroovyResolveTestCase {
     PsiReference ref = configureByFile("unboxBigDecimal/A.groovy");
     PsiElement resolved = ref.resolve();
     assertTrue(resolved instanceof PsiMethod);
-    assertEquals(((PsiMethod) resolved).getReturnType(), PsiType.DOUBLE);
+    assertEquals(PsiType.DOUBLE, ((PsiMethod) resolved).getReturnType());
   }
 
   public void testGrvy1157() throws Exception {
diff --git a/plugins/groovy/testdata/highlighting/GstringAssignableToString.groovy b/plugins/groovy/testdata/highlighting/GstringAssignableToString.groovy
new file mode 100644
index 000000000000..d424fd89bab6
--- /dev/null
+++ b/plugins/groovy/testdata/highlighting/GstringAssignableToString.groovy
@@ -0,0 +1,7 @@
+def foo(Date d, int x) {}
+
+def foo(String s, double x) {}
+
+def bar = 10
+
+foo "$bar", 2
\ No newline at end of file