diff --git a/lib/Basic/IdentifierTable.cpp b/lib/Basic/IdentifierTable.cpp
index 8945c2f..7df52c6 100644
--- a/lib/Basic/IdentifierTable.cpp
+++ b/lib/Basic/IdentifierTable.cpp
@@ -78,6 +78,10 @@
   // Populate the identifier table with info about keywords for the current
   // language.
   AddKeywords(LangOpts);
+      
+
+  // Add the '_experimental_modules_import' contextual keyword.
+  get("__experimental_modules_import").setModulesImport(true);
 }
 
 //===----------------------------------------------------------------------===//