diff --git a/hw/xquartz/bundle/bundle-main.c b/hw/xquartz/bundle/bundle-main.c
index c66856794..df78d7fb8 100644
--- a/hw/xquartz/bundle/bundle-main.c
+++ b/hw/xquartz/bundle/bundle-main.c
@@ -104,7 +104,7 @@ static char *command_from_prefs(const char *key, const char *default_value) {
     CFPropertyListRef PlistRef = CFPreferencesCopyAppValue(cfKey, kCFPreferencesCurrentApplication);
     
     if ((PlistRef == NULL) || (CFGetTypeID(PlistRef) != CFStringGetTypeID())) {
-        CFStringRef cfDefaultValue = CFStringCreateWithPascalString(NULL, default_value, kCFStringEncodingASCII);
+        CFStringRef cfDefaultValue = CFStringCreateWithCString(NULL, default_value, kCFStringEncodingASCII);
 
         CFPreferencesSetAppValue(cfKey, cfDefaultValue, kCFPreferencesCurrentApplication);
         CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication);