diff --git a/ANNOUNCE b/ANNOUNCE
index 6f486c3b..92093a04 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -50,6 +50,7 @@ version 1.2.42beta01 [December 4, 2009]
     instead of in $prefix/include/libpng.  Also revised makefile.sco
     to put them in $prefix/include/libpng12 instead of in
     $prefix/include/libpng/libpng12.
+  Removed leftover "-DPNG_CONFIGURE_LIBPNG" from scripts/makefile.darwin
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 
diff --git a/CHANGES b/CHANGES
index d9ccd04a..3ba3b9bf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2613,6 +2613,7 @@ version 1.2.42 [December 4, 2009]
     instead of in $prefix/include/libpng.  Also revised makefile.sco
     to put them in $prefix/include/libpng12 instead of in
     $prefix/include/libpng/libpng12.
+  Removed leftover "-DPNG_CONFIGURE_LIBPNG" from scripts/makefile.darwin
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 17a4c824..d6060d26 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -42,7 +42,7 @@ RANLIB=ranlib
 RM_F=/bin/rm -f
 
 # CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
-CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O -funroll-loops
+CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
 
 INCPATH=$(prefix)/include