1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/dsl/GroovyDslFileIndex.java b/plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/dsl/GroovyDslFileIndex.java
index ae0b7566fe34..cbc6fa29d853 100644
--- a/plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/dsl/GroovyDslFileIndex.java
+++ b/plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/dsl/GroovyDslFileIndex.java
@@ -467,7 +467,7 @@ public class GroovyDslFileIndex extends ScalarIndexExtension<String> {
     }
 
     @Override
-    public boolean acceptInput(final VirtualFile file) {
+    public boolean acceptInput(@NotNull final VirtualFile file) {
       return StringUtil.endsWith(file.getNameSequence(), ".gdsl");
     }
   }