diff --git a/contrib/pngminim/preader/README b/contrib/pngminim/preader/README
index b389f1c8..7eaffa05 100644
--- a/contrib/pngminim/preader/README
+++ b/contrib/pngminim/preader/README
@@ -1,6 +1,10 @@
 This demonstrates the use of PNG_USER_CONFIG and pngusr.h
 
 To build a minimal read-only progressive decoder with X display, run
-    gather.sh  # to collect needed files from pngminus, libpng, and zlib
+gather.sh to collect needed files from pngminus, libpng, and zlib
+
+Edit makefile.std if required, to find your X library and include files,
+then
+    
     make -f makefile.std