diff --git a/ANNOUNCE b/ANNOUNCE
index 0e41612c..536bf8c6 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -149,6 +149,7 @@ version 1.2.41beta17 [November 9, 2009]
   Marked memory allocation function prototypes with PNG_ALLOCATED.
   Changed png_check_sig() to !png_sig_cmp() in contrib programs.
   Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+  Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 
diff --git a/CHANGES b/CHANGES
index 97e50d16..a9a336b3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2580,6 +2580,7 @@ version 1.2.41beta17 [November 9, 2009]
   Marked memory allocation function prototypes with PNG_ALLOCATED.
   Changed png_check_sig() to !png_sig_cmp() in contrib programs.
   Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+  Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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diff --git a/contrib/pngminim/decoder/makefile b/contrib/pngminim/decoder/makefile
index 27e04cbd..5f468601 100644
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -7,7 +7,7 @@ LD=$(CC)
 
 RM=rm -f
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
        -DdeflateParams\(a,b,c\)=Z_OK -I. -O1
 
 C=.c
diff --git a/contrib/pngminim/encoder/makefile b/contrib/pngminim/encoder/makefile
index 1182b5b2..5e86f892 100644
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -7,7 +7,7 @@ LD=$(CC)
 
 RM=rm -f
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZIP -I. -O1
 
 C=.c
 O=.o
diff --git a/contrib/pngminim/preader/makefile b/contrib/pngminim/preader/makefile
index 74a17a38..2dcb3fdd 100644
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -23,7 +23,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
        -DdeflateParams\(a,b,c\)=Z_OK -I. $(XINC) -O1
 
 C=.c