diff --git a/mlir/include/mlir/IR/OpBase.td b/mlir/include/mlir/IR/OpBase.td
--- a/mlir/include/mlir/IR/OpBase.td
+++ b/mlir/include/mlir/IR/OpBase.td
@@ -894,7 +894,7 @@
         And<[
             containerPred,
             Concat<
-                "::llvm::all_of(" # elementTypesCall # ", [](Type t) { "
+                "::llvm::all_of(" # elementTypesCall # ", [](::mlir::Type t) { "
                 "return t && (",
                 SubstLeaves<"$_self", "t", etype.predicate>,
                 "); })"