diff --git a/mlir/tools/tblgen-to-irdl/OpDefinitionsGen.cpp b/mlir/tools/tblgen-to-irdl/OpDefinitionsGen.cpp
index 48634a17ae32..c3b1de0dff18 100644
--- a/mlir/tools/tblgen-to-irdl/OpDefinitionsGen.cpp
+++ b/mlir/tools/tblgen-to-irdl/OpDefinitionsGen.cpp
@@ -122,7 +122,7 @@ static std::optional<Type> recordToType(MLIRContext *ctx,
   }
 
   if (predRec.getName() == "NoneType") {
-    return NoneType::get(ctx);
+    return mlir::NoneType::get(ctx);
   }
 
   if (predRec.getName() == "BF16") {