diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/WeakestTypeFinder.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/WeakestTypeFinder.java
index c8f757fedc37..cfc7703c0fe2 100644
--- a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/WeakestTypeFinder.java
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/WeakestTypeFinder.java
@@ -105,10 +105,10 @@ public class WeakestTypeFinder {
       }
       hasUsages = true;
       PsiElement referenceElement = reference.getElement();
-      PsiElement referenceParent = referenceElement.getParent();
+      PsiElement referenceParent = PsiUtil.skipParenthesizedExprUp(referenceElement.getParent());
       if (referenceParent instanceof PsiMethodCallExpression) {
         referenceElement = referenceParent;
-        referenceParent = referenceElement.getParent();
+        referenceParent = PsiUtil.skipParenthesizedExprUp(referenceElement.getParent());
       }
       final PsiElement referenceGrandParent = referenceParent.getParent();
       if (reference instanceof PsiMethodReferenceExpression) {
diff --git a/plugins/InspectionGadgets/test/com/siyeh/igtest/abstraction/weaken_type/TypeMayBeWeakened.java b/plugins/InspectionGadgets/test/com/siyeh/igtest/abstraction/weaken_type/TypeMayBeWeakened.java
index dbd6e3121bd3..f2cb087c7b52 100644
--- a/plugins/InspectionGadgets/test/com/siyeh/igtest/abstraction/weaken_type/TypeMayBeWeakened.java
+++ b/plugins/InspectionGadgets/test/com/siyeh/igtest/abstraction/weaken_type/TypeMayBeWeakened.java
@@ -221,4 +221,12 @@ class LambdaWithBody {
   interface ToInputStream {
     InputStream map(String name);
   }
+}
+
+class ParensUsage {
+  public static void main(String[] args) {
+    SortedMap<String, String> s = new TreeMap<>();
+    System.out.println(s.keySet());
+    System.out.println((s).firstKey());
+  }
 }
\ No newline at end of file