diff --git a/build/jam/BuildSetup b/build/jam/BuildSetup
index ce2ed4090c..5864f70723 100644
--- a/build/jam/BuildSetup
+++ b/build/jam/BuildSetup
@@ -1355,7 +1355,7 @@ if $(HAIKU_NO_WERROR) != 1 {
 	EnableWerror src add-ons translators bmp ;
 #	EnableWerror src add-ons translators exr ;
 	EnableWerror src add-ons translators gif ;
-	EnableWerror src add-ons translators hpgs ;
+#	EnableWerror src add-ons translators hpgs ;
 	EnableWerror src add-ons translators hvif ;
 	EnableWerror src add-ons translators ico ;
 #	EnableWerror src add-ons translators jpeg ; # gcc2
diff --git a/src/add-ons/translators/hpgs/lib/hpgsimage.c b/src/add-ons/translators/hpgs/lib/hpgsimage.c
index 813408d938..da2d4aaf1e 100644
--- a/src/add-ons/translators/hpgs/lib/hpgsimage.c
+++ b/src/add-ons/translators/hpgs/lib/hpgsimage.c
@@ -36,6 +36,7 @@
 #include <errno.h>
 #if (defined(__BEOS__) || defined(__HAIKU__))
 #include <png.h>
+#define png_infopp_NULL (png_infopp)NULL
 #else
 #include <libpng12/png.h>
 #endif