diff --git a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
index cc99698ead33f..5218ad3264954 100644
--- a/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
+++ b/flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp
@@ -638,7 +638,7 @@ mlir::LLVM::DITypeAttr DebugTypeGenerator::convertPointerLikeType(
 
   return mlir::LLVM::DIDerivedTypeAttr::get(
       context, llvm::dwarf::DW_TAG_pointer_type,
-      mlir::StringAttr::get(context, ""), elTyAttr, ptrSize,
+      mlir::StringAttr::get(context, ""), elTyAttr, /*sizeInBits=*/ptrSize * 8,
       /*alignInBits=*/0, /*offset=*/0,
       /*optional<address space>=*/std::nullopt, /*extra data=*/nullptr);
 }