1 files changed, 7 insertions, 5 deletions
diff --git a/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/ControlFlowAnalyzer.java b/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/ControlFlowAnalyzer.java
index 7ef19f2b73d0..7539d7195701 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/ControlFlowAnalyzer.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInspection/dataFlow/ControlFlowAnalyzer.java
@@ -591,12 +591,14 @@ public class ControlFlowAnalyzer extends JavaElementVisitor {
 
       generateBoxingUnboxingInstructionFor(caseExpression, PsiType.INT);
       final PsiClass psiClass = PsiUtil.resolveClassInType(caseExpression.getType());
-      if (psiClass != null && psiClass.isEnum()) {
+      if (psiClass != null) {
         addInstruction(new FieldReferenceInstruction(caseExpression, "switch statement expression"));
-        enumValues = new HashSet<PsiEnumConstant>();
-        for (PsiField f : psiClass.getFields()) {
-          if (f instanceof PsiEnumConstant) {
-            enumValues.add((PsiEnumConstant)f);
+        if (psiClass.isEnum()) {
+          enumValues = new HashSet<PsiEnumConstant>();
+          for (PsiField f : psiClass.getFields()) {
+            if (f instanceof PsiEnumConstant) {
+              enumValues.add((PsiEnumConstant)f);
+            }
           }
         }
       } else {