diff --git a/platform/lang-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/FileReferenceCharFilter.java b/platform/lang-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/FileReferenceCharFilter.java
index 4d63cd561278..b4de601a0a3f 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/FileReferenceCharFilter.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/FileReferenceCharFilter.java
@@ -35,6 +35,8 @@ public class FileReferenceCharFilter extends CharFilter{
 
     final LookupElement item = lookup.getCurrentItem();
     if (item != null && item.getObject() instanceof PsiFileSystemItem) {
+      if ('.' == c) return Result.ADD_TO_PREFIX;
+
       final PsiReference reference = file.findReferenceAt(lookup.getEditor().getCaretModel().getOffset());
       if (reference instanceof FileReference) return Result.HIDE_LOOKUP;