diff --git a/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/CastConflictsWithInstanceofInspection.java b/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/CastConflictsWithInstanceofInspection.java
index 9301dcc923ba..2a8d1b10aeda 100644
--- a/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/CastConflictsWithInstanceofInspection.java
+++ b/plugins/InspectionGadgets/src/com/siyeh/ig/bugs/CastConflictsWithInstanceofInspection.java
@@ -200,8 +200,8 @@ public class CastConflictsWithInstanceofInspection extends BaseInspection {
 
   private static class ReplaceCastFix extends ReplaceFix {
 
-    private String myInstanceofType;
-    private String myCastType;
+    private final String myInstanceofType;
+    private final String myCastType;
 
     public ReplaceCastFix(String instanceofType, String castType) {
       myInstanceofType = instanceofType;