diff --git a/Source/pfile.cpp b/Source/pfile.cpp
index 55f6adff0..54f987960 100644
--- a/Source/pfile.cpp
+++ b/Source/pfile.cpp
@@ -95,7 +95,7 @@ void pfile_rename_temp_to_perm()
 
 	dwIndex = 0;
 	while (GetTempSaveNames(dwIndex, szTemp)) {
-		bool result = GetPermSaveNames(dwIndex, szPerm); // DO NOT PUT DIRECTLY INTO ASSERT!
+		[[maybe_unused]] bool result = GetPermSaveNames(dwIndex, szPerm); // DO NOT PUT DIRECTLY INTO ASSERT!
 		assert(result);
 		dwIndex++;
 		if (mpqapi_has_file(szTemp)) {