diff --git a/src/d_main.cpp b/src/d_main.cpp
index 6491dc3e3..8b9e54680 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -2223,7 +2223,7 @@ void D_DoomMain (void)
 
 	if (Args->CheckParm("-hashfiles"))
 	{
-		FString filename = "fileinfo.txt";
+		const char *filename = "fileinfo.txt";
 		Printf("Hashing loaded content to: %s\n", filename);
 		hashfile = fopen(filename, "w");
 		if (hashfile)