diff --git a/RegExpSupport/src/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspection.java b/RegExpSupport/src/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspection.java
index 4c0004233d68..d07130ad5f7e 100644
--- a/RegExpSupport/src/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspection.java
+++ b/RegExpSupport/src/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspection.java
@@ -9,6 +9,7 @@ import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.TextRange;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiElementVisitor;
+import com.intellij.psi.PsiErrorElement;
 import com.intellij.psi.util.PsiTreeUtil;
 import org.intellij.lang.regexp.RegExpBundle;
 import org.intellij.lang.regexp.RegExpTT;
@@ -107,7 +108,7 @@ public class RegExpSimplifiableInspection extends LocalInspectionTool {
 
     @Override
     public void visitRegExpQuantifier(RegExpQuantifier quantifier) {
-      if (!quantifier.isCounted()) {
+      if (!quantifier.isCounted() || quantifier.getLastChild() instanceof PsiErrorElement) {
         return;
       }
       final RegExpNumber minElement = quantifier.getMin();
diff --git a/RegExpSupport/test/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspectionTest.java b/RegExpSupport/test/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspectionTest.java
index 558f84d7172e..697b1880dd60 100644
--- a/RegExpSupport/test/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspectionTest.java
+++ b/RegExpSupport/test/org/intellij/lang/regexp/inspection/RegExpSimplifiableInspectionTest.java
@@ -42,6 +42,10 @@ public class RegExpSimplifiableInspectionTest extends RegExpInspectionTestCase {
     highlightTest("[\\W&&\\S]");
   }
 
+  public void testIncomplete() {
+    highlightTest(".{<EOLError descr=\"Number expected\"></EOLError>");
+  }
+
   public void testSingleElementClass() {
     doTest("[a]", "a");
   }