diff --git a/flang/lib/Optimizer/Dialect/FIRType.cpp b/flang/lib/Optimizer/Dialect/FIRType.cpp
--- a/flang/lib/Optimizer/Dialect/FIRType.cpp
+++ b/flang/lib/Optimizer/Dialect/FIRType.cpp
@@ -300,7 +300,7 @@
   return emitError() << "invalid type for boxproc" << eleTy << '\n';
 }
 
-static bool canBePointerOrHeapElementType(mlir::Type eleTy) {
+static bool cannotBePointerOrHeapElementType(mlir::Type eleTy) {
   return eleTy.isa<BoxType, BoxCharType, BoxProcType, ShapeType, ShapeShiftType,
                    SliceType, FieldType, LenType, HeapType, PointerType,
                    ReferenceType, TypeDescType>();
@@ -436,7 +436,7 @@
 mlir::LogicalResult
 fir::HeapType::verify(llvm::function_ref<mlir::InFlightDiagnostic()> emitError,
                       mlir::Type eleTy) {
-  if (canBePointerOrHeapElementType(eleTy))
+  if (cannotBePointerOrHeapElementType(eleTy))
     return emitError() << "cannot build a heap pointer to type: " << eleTy
                        << '\n';
   return mlir::success();
@@ -487,7 +487,7 @@
 mlir::LogicalResult fir::PointerType::verify(
     llvm::function_ref<mlir::InFlightDiagnostic()> emitError,
     mlir::Type eleTy) {
-  if (canBePointerOrHeapElementType(eleTy))
+  if (cannotBePointerOrHeapElementType(eleTy))
     return emitError() << "cannot build a pointer to type: " << eleTy << '\n';
   return mlir::success();
 }