--- gpl/pngsplit.c	2007-02-11 22:46:23.000000000 +0100
+++ gpl/pngsplit.c.oden	2009-02-19 15:13:40.000000000 +0100
@@ -141,8 +141,8 @@ int main(int argc, char *argv[])
                   0 == strncmp( argv[argn], "-quiet", 2 ) )
             verbose = 0;
         else {
-            fprintf(stderr, pngsplit_hdr);
-            fprintf(stderr, pngsplit_usage);
+            fprintf(stderr, "%s", pngsplit_hdr);
+            fprintf(stderr, "%s", pngsplit_usage);
             fflush(stderr);
             return 1;
         }
@@ -150,8 +150,8 @@ int main(int argc, char *argv[])
     }
 
     if ( argn == argc ) {
-        fprintf(stderr, pngsplit_hdr);
-        fprintf(stderr, pngsplit_usage);
+        fprintf(stderr, "%s", pngsplit_hdr);
+        fprintf(stderr, "%s", pngsplit_usage);
         fflush(stderr);
         return 5;
     } else {
@@ -162,7 +162,7 @@ int main(int argc, char *argv[])
 
     /*=============================  MAIN LOOP  =============================*/
 
-    fprintf(stdout, pngsplit_hdr);
+    fprintf(stdout, "%s", pngsplit_hdr);
     fflush(stdout);
 
     while (argn <= argc) {
--- gpl/png-fix-IDAT-windowsize.c	2006-06-17 23:42:13.000000000 +0200
+++ gpl/png-fix-IDAT-windowsize.c.oden	2009-02-19 15:15:44.000000000 +0100
@@ -127,7 +127,7 @@ int main(int argc, char *argv[])
             fprintf(stderr, "  Compiled with zlib %s; using zlib %s.\n",
               ZLIB_VERSION, zlib_version);
             fprintf(stderr, "\n");
-            fprintf(stderr, png_fix_IDAT_windowsize_usage);
+            fprintf(stderr, "%s", png_fix_IDAT_windowsize_usage);
             fflush(stderr);
             return 1;
         }
@@ -143,7 +143,7 @@ int main(int argc, char *argv[])
     fflush(stdout);
 
     if ( argn == argc ) {
-        fprintf(stderr, png_fix_IDAT_windowsize_usage);
+        fprintf(stderr, "%s", png_fix_IDAT_windowsize_usage);
         fflush(stderr);
         return 5;
     } else {