diff --git a/clang/include/clang/CIR/Dialect/IR/CIRTypes.td b/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
index 3a0451175f30..681f527fd9b9 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIRTypes.td
@@ -322,8 +322,6 @@ def CIR_BoolType :
   let description = [{
     `cir.bool` represent's C++ bool type.
   }];
-
-  let hasCustomAssemblyFormat = 1;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/clang/lib/CIR/Dialect/IR/CIRTypes.cpp b/clang/lib/CIR/Dialect/IR/CIRTypes.cpp
index e35d60293f41..748c2568d666 100644
--- a/clang/lib/CIR/Dialect/IR/CIRTypes.cpp
+++ b/clang/lib/CIR/Dialect/IR/CIRTypes.cpp
@@ -104,12 +104,6 @@ void CIRDialect::printType(Type type, DialectAsmPrinter &os) const {
       });
 }
 
-Type BoolType::parse(mlir::AsmParser &parser) {
-  return get(parser.getContext());
-}
-
-void BoolType::print(mlir::AsmPrinter &printer) const {}
-
 //===----------------------------------------------------------------------===//
 // StructType Definitions
 //===----------------------------------------------------------------------===//
diff --git a/clang/test/CIR/IR/invalid.cir b/clang/test/CIR/IR/invalid.cir
index 58178e7c0b9a..94a1d8ade826 100644
--- a/clang/test/CIR/IR/invalid.cir
+++ b/clang/test/CIR/IR/invalid.cir
@@ -1486,7 +1486,7 @@ cir.global external @f = #cir.fp<42> : !cir.float
 // Verify
 !s32i = !cir.int<s, 32>
 cir.func @cast0(%arg0: !s32i, %arg1: !s32i) {
-  // expected-error @below {{custom op 'cir.cmp' invalid kind of Type specified}}
+  // expected-error @below {{custom op 'cir.cmp' invalid kind of type specified}}
   %1 = cir.cmp(eq, %arg0, %arg1): !s32i, !s32i
   cir.return
 }