diff --git a/c/clang/basic.go b/c/clang/basic.go
index 44d6665e..5130803c 100644
--- a/c/clang/basic.go
+++ b/c/clang/basic.go
@@ -60,8 +60,9 @@ func (*StringSet) Dispose() {}
 
 func GoString(clangStr String) (str string) {
 	defer clangStr.Dispose()
-	if clangStr.CStr() != nil {
-		str = c.GoString(clangStr.CStr())
+	cstr := clangStr.CStr()
+	if cstr != nil {
+		str = c.GoString(cstr)
 	}
 	return
 }