diff --git a/mlir/include/mlir/IR/Builders.h b/mlir/include/mlir/IR/Builders.h
index 96dd14f142328..3f7b3268dd085 100644
--- a/mlir/include/mlir/IR/Builders.h
+++ b/mlir/include/mlir/IR/Builders.h
@@ -21,7 +21,6 @@ class UnknownLoc;
 class FileLineColLoc;
 class FileLineColRange;
 class Type;
-class PrimitiveType;
 class IntegerType;
 class FloatType;
 class FunctionType;