diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ResolveElementCache.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ResolveElementCache.kt
index 21d12a25ac9..c8f3992ffb2 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ResolveElementCache.kt
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ResolveElementCache.kt
@@ -226,6 +226,7 @@ class ResolveElementCache(
             bindingContexts.add(resolveSession.bindingContext)
         }
 
+        //TODO: it can be slow if too many contexts
         return CompositeBindingContext.create(bindingContexts)
     }