diff --git a/src/configure b/src/configure
index 715a606311..ae2482e643 100755
--- a/src/configure
+++ b/src/configure
@@ -12014,8 +12014,12 @@ if test "${enable_mred}" = "yes" ; then
   makefiles="$makefiles
              mred/Makefile
                mred/wxs/Makefile mred/wxme/Makefile
-               mred/gc2/Makefile
+               mred/gc2/Makefile"
+
+  if test "${enable_libpng}" != "yes" ; then
+    makefiles="$makefiles
                wxcommon/libpng/Makefile wxcommon/zlib/Makefile"
+  fi
 
   if test "${enable_quartz}" = "yes" ; then
     makefiles="$makefiles
diff --git a/src/mzscheme/configure.ac b/src/mzscheme/configure.ac
index 55c680a812..87af1f2b53 100644
--- a/src/mzscheme/configure.ac
+++ b/src/mzscheme/configure.ac
@@ -1453,8 +1453,12 @@ if test "${enable_mred}" = "yes" ; then
   makefiles="$makefiles
              mred/Makefile
                mred/wxs/Makefile mred/wxme/Makefile
-               mred/gc2/Makefile
+               mred/gc2/Makefile"
+
+  if test "${enable_libpng}" != "yes" ; then
+    makefiles="$makefiles 
                wxcommon/libpng/Makefile wxcommon/zlib/Makefile"
+  fi
 
   if test "${enable_quartz}" = "yes" ; then
     makefiles="$makefiles