diff --git a/ANNOUNCE b/ANNOUNCE
index 54b4ad889..eb2ea1e6b 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -50,6 +50,7 @@ Version 1.5.13 [September 27, 2012]
   No changes.
 
 Version 1.5.14beta01 [September 27, 2012]
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
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diff --git a/CHANGES b/CHANGES
index 31a49233a..a4d4a8529 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3920,6 +3920,7 @@ Version 1.5.13 [September 27, 2012]
   No changes.
 
 Version 1.5.14beta01 [September 27, 2012]
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/contrib/pngminim/decoder/makefile b/contrib/pngminim/decoder/makefile
index e10e1225d..4e0aff86c 100644
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO DNO_GZIP -I. -O1
 
 C=.c
 O=.o
diff --git a/contrib/pngminim/encoder/makefile b/contrib/pngminim/encoder/makefile
index d6f39e2ea..727afa04f 100644
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DZ_SOLO DNO_GZIP -I. -O1
 
 C=.c
 O=.o
diff --git a/contrib/pngminim/preader/makefile b/contrib/pngminim/preader/makefile
index f4b0ccdc8..48b9b4e68 100644
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -30,7 +30,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO DNO_GZIP -I. $(XINC) -O1
 
 C=.c
 O=.o