diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/EquivalenceChecker.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/EquivalenceChecker.java
index d06eba609c06..9a4abecd7202 100644
--- a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/EquivalenceChecker.java
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/EquivalenceChecker.java
@@ -781,6 +781,9 @@ public class EquivalenceChecker {
     }
     final PsiExpression operand1 = typeCastExpression1.getOperand();
     final PsiExpression operand2 = typeCastExpression2.getOperand();
+    if (operand1 instanceof PsiFunctionalExpression || operand2 instanceof PsiFunctionalExpression) {
+      return EXACTLY_UN_MATCHES;
+    }
     return expressionsAreEquivalentDecision(operand1, operand2).setConcreteIfExactUnMatches(operand1, operand2);
   }
 
diff --git a/plugins/InspectionGadgets/test/com/siyeh/igtest/controlflow/conditional_expression_with_identical_branches/ConditionalExpressionWithIdenticalBranches.java b/plugins/InspectionGadgets/test/com/siyeh/igtest/controlflow/conditional_expression_with_identical_branches/ConditionalExpressionWithIdenticalBranches.java
index ae47557b2100..b25ba92e5d3f 100644
--- a/plugins/InspectionGadgets/test/com/siyeh/igtest/controlflow/conditional_expression_with_identical_branches/ConditionalExpressionWithIdenticalBranches.java
+++ b/plugins/InspectionGadgets/test/com/siyeh/igtest/controlflow/conditional_expression_with_identical_branches/ConditionalExpressionWithIdenticalBranches.java
@@ -72,4 +72,10 @@ class ConditionalExpressionWithIdenticalBranches {
       String a = f ? test(new String[]{"a", "b"}) : test("a");
     }
   }
+
+  static class WithFunctionalExpression {
+    private void foo(boolean b) {
+      Runnable r = b ? (Runnable) () -> {} : (Runnable) () -> {};
+    }
+  }
 }
\ No newline at end of file