diff --git a/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp b/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
index 50ac1c60184eb..93e370d91e6b9 100644
--- a/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
+++ b/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
@@ -398,7 +398,7 @@ struct LowerGpuOpsToNVVMOpsPass final
       if (!allowedDialectsSet.empty() && !allowed)
         continue;
 
-      auto iface = dyn_cast<ConvertToLLVMPatternInterface>(dialect);
+      auto *iface = dyn_cast<ConvertToLLVMPatternInterface>(dialect);
       if (!iface) {
         // Error out if dialect was explicily specified but doesn't implement
         // conversion interface.