diff --git a/src/MainUtils.cpp b/src/MainUtils.cpp
index 70b99cc..6a238be 100644
--- a/src/MainUtils.cpp
+++ b/src/MainUtils.cpp
@@ -193,9 +193,9 @@ void emitOutputFiles(string outputBaseName, EmissionTargetType emissionTarget,
         emissionTarget == EmitMLIR) {
       if (mlir::failed(cleanSourcePM.run(*module)))
         llvm::errs() << "Could not apply simplification passes.\n";
-      outputCode(module, outputBaseName, ".mlir");
+      outputCode(module, outputBaseName, ".tmp");
       printf("Constant-free MLIR Code written to: \n\t%s\n\n",
-          (outputBaseName + ".mlir").c_str());
+          (outputBaseName + ".tmp").c_str());
 
       printf("Use:\n\t%s\nto continue lowering the code to other dialects.\n",
           (outputBaseName + ".onnx.mlir").c_str());