--- WindowMaker-0.92.0/wrlib/load.c~	2004-10-12 20:21:31.000000000 +0200
+++ WindowMaker-0.92.0/wrlib/load.c	2010-02-06 02:46:45.676390539 +0100
@@ -348,7 +348,7 @@
 
 #ifdef USE_PNG
     /* check for PNG */
-    if (png_check_sig(buffer, 8))
+    if (png_sig_cmp(buffer, 0, 8))
         return IM_PNG;
 #endif