diff -urN zboy-0.52-orig/loadrominfos.c zboy-0.52-patched/loadrominfos.c
--- zboy-0.52-orig/loadrominfos.c	2012-04-23 18:47:50.059592716 +1100
+++ zboy-0.52-patched/loadrominfos.c	2012-04-23 18:51:10.708850809 +1100
@@ -19,7 +19,7 @@
   while ((TempString[x] > 31) && (TempString[x] < 128) && (x < 16)) x++;
   TempString[x] = 0;   /* Trim all zeroed bytes at the end, as well as high bytes (occuring on new-style licenses) */
   /*TempString = TRIM(TempString) */       /* Trim any spaces on both ends of the string */
-  sprintf(RomInfos->Title, TempString);
+  sprintf(RomInfos->Title, "%s", TempString);
 
   /* Now let's see if we can fix the title in any possible way... */
 
diff -urN zboy-0.52-orig/mmu.c zboy-0.52-patched/mmu.c
--- zboy-0.52-orig/mmu.c	2012-04-23 18:47:50.059592716 +1100
+++ zboy-0.52-patched/mmu.c	2012-04-23 18:54:13.937402582 +1100
@@ -127,7 +127,7 @@
         }
       } else {
         sprintf(UserMessage, "MMU FATAL ERROR!\nTRIED TO RUN LCD OAM DMA TRANSFER USING AN INVALID RANGE!");
-        printf(UserMessage);
+        printf("%s", UserMessage);
         PrintMsg(UserMessage, 0);
         PressAnyKey();
         exit(0);
diff -urN zboy-0.52-orig/printmsg.c zboy-0.52-patched/printmsg.c
--- zboy-0.52-orig/printmsg.c	2012-04-23 18:47:50.075601091 +1100
+++ zboy-0.52-patched/printmsg.c	2012-04-23 18:55:31.993404764 +1100
@@ -3,7 +3,7 @@
 */
 
 void SetUserMsg(char *msg) {
-  sprintf(UserMessage, msg);
+  sprintf(UserMessage, "%s", msg);
   UserMessageFramesLeft = 120; /* Make the message to be active for 120 frames (2s) */
 }
 
@@ -15,7 +15,7 @@
   signed int pixrow, pixcol, linenum = 0;
   int x, textstring_len;
   char textstring[1024], txtmessage[1024];
-  snprintf(txtmessage, 1023, txtorgmessage);
+  snprintf(txtmessage, 1023, "%s", txtorgmessage);
   if (TransparentFlag == 0) {
     for (pixcol = 0; pixcol < 160; pixcol++) {
       for (pixrow = 0; pixrow < 144; pixrow++) ScreenBuffer[pixcol][pixrow] = 254;
diff -urN zboy-0.52-orig/zboy.c zboy-0.52-patched/zboy.c
--- zboy-0.52-orig/zboy.c	2012-04-23 18:47:50.069597968 +1100
+++ zboy-0.52-patched/zboy.c	2012-04-23 18:53:25.136021569 +1100
@@ -336,7 +336,7 @@
     } else {  /* anything else is assumed to be a filename */
         if (argv[x][0] != 0) { /* ignore if the parameter is empty */
           if (RomInfos.Filename[0] == 0) {
-              snprintf(RomInfos.Filename, 1022, argv[x]);
+              snprintf(RomInfos.Filename, 1022, "%s", argv[x]);
             } else {
               RomInfos.Filename[0] = 0;   /* Clear out filename, to make sure to display usage screen later */
               x = 250;  /* make sure to quit parsing now */
diff -urN zboy-0.52-orig/zboygui.c zboy-0.52-patched/zboygui.c
--- zboy-0.52-orig/zboygui.c	2012-04-23 18:47:50.059592716 +1100
+++ zboy-0.52-patched/zboygui.c	2012-04-23 18:52:40.908919750 +1100
@@ -75,13 +75,13 @@
   if (gtk_dialog_run(GTK_DIALOG(fileopendialog)) == GTK_RESPONSE_ACCEPT) {
     result = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fileopendialog));
     if (result != NULL) {
-      snprintf(filename, 1024, result);
+      snprintf(filename, 1024, "%s", result);
     }
   }
   gtk_widget_destroy(fileopendialog);
   if (filename[0] != 0) {
     zboygtkinfos->newromtoload = 1;
-    sprintf(zboygtkinfos->rominfo->Filename, filename);
+    sprintf(zboygtkinfos->rominfo->Filename, "%s", filename);
     gtk_main_quit();
   }
 }