diff -Nru armagetronad-0.2.8.3.2.orig/configure.ac armagetronad-0.2.8.3.2/configure.ac
--- armagetronad-0.2.8.3.2.orig/configure.ac	2011-09-11 12:50:26.000000000 +0200
+++ armagetronad-0.2.8.3.2/configure.ac	2011-10-12 13:47:51.969450951 +0200
@@ -731,7 +731,7 @@
 CPPFLAGS="$CPPFLAGS `libpng-config --cflags`"
 LIBS="$LIBS $PNGLIBS"
 
-AC_CHECK_FUNC(png_check_sig,
+AC_CHECK_FUNC(png_sig_cmp,
 ,
 AC_MSG_ERROR([You need libpng to compile Armagetron.]))