diff --git a/java/java-impl/src/com/intellij/codeInsight/intention/impl/WrapWithUnmodifiableAction.java b/java/java-impl/src/com/intellij/codeInsight/intention/impl/WrapWithUnmodifiableAction.java
index b3c2885ca142..4448b45f04a6 100644
--- a/java/java-impl/src/com/intellij/codeInsight/intention/impl/WrapWithUnmodifiableAction.java
+++ b/java/java-impl/src/com/intellij/codeInsight/intention/impl/WrapWithUnmodifiableAction.java
@@ -97,7 +97,7 @@ public class WrapWithUnmodifiableAction extends BaseIntentionAction {
     }
     PsiExpression expression = getParentExpression(editor, file);
     if (expression != null) {
-      if (isUnmodifiable(expression)) {
+      if (PsiUtil.isOnAssignmentLeftHand(expression) || isUnmodifiable(expression)) {
         return false;
       }
       PsiClass psiClass = PsiUtil.resolveClassInClassTypeOnly(expression.getType());
diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/wrapWithUnmodifiable/beforeLeftSideOfAssignment.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/wrapWithUnmodifiable/beforeLeftSideOfAssignment.java
new file mode 100644
index 000000000000..27043f002da0
--- /dev/null
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/wrapWithUnmodifiable/beforeLeftSideOfAssignment.java
@@ -0,0 +1,10 @@
+// "Wrap with unmodifiable map" "false"
+import java.util.Map;
+import java.util.HashMap;
+
+class C {
+    Map<String, String> map;
+    {
+        this.<caret>map = new HashMap<>();
+    }
+}
\ No newline at end of file