diff --git a/platform/util/src/com/intellij/util/ArrayUtil.java b/platform/util/src/com/intellij/util/ArrayUtil.java
index 081ac6923cd6..b011492ecf40 100644
--- a/platform/util/src/com/intellij/util/ArrayUtil.java
+++ b/platform/util/src/com/intellij/util/ArrayUtil.java
@@ -269,7 +269,14 @@ public class ArrayUtil extends ArrayUtilRt {
       return array;
     }
 
-    final T[] array2 = collection.toArray(factory.create(collection.size()));
+    final T[] array2;
+    try {
+      array2 = collection.toArray(factory.create(collection.size()));
+    }
+    catch (ArrayStoreException e) {
+      throw new RuntimeException("Bad elements in collection: " + collection, e);
+    }
+
     if (array.length == 0) {
       return array2;
     }