diff --git a/arm9/source/dumpOperations.cpp b/arm9/source/dumpOperations.cpp
index a517639..f2f944f 100644
--- a/arm9/source/dumpOperations.cpp
+++ b/arm9/source/dumpOperations.cpp
@@ -16,6 +16,7 @@
 #include "screenshot.h"
 #include "version.h"
 
+#include <cctype>
 #include <dirent.h>
 #include <nds.h>
 #include <nds/arm9/dldi.h>
@@ -825,18 +826,8 @@ void ndsCardDump(void) {
 		sprintf(gameTitle, "NO-TITLE");
 	} else {
 		for(uint i = 0; i < sizeof(gameTitle); i++) {
-			switch(gameTitle[i]) {
-				case '>':
-				case '<':
-				case ':':
-				case '"':
-				case '/':
-				case '\x5C':
-				case '|':
-				case '?':
-				case '*':
-					gameTitle[i] = '_';
-			}
+			if(!isalnum(gameTitle[i]))
+				gameTitle[i] = '_';
 		}
 	}
 	if (gameCode[0] == 0 || gameCode[0] == 0x23 || gameCode[0] == 0xFF) {