diff --git a/ANNOUNCE b/ANNOUNCE
index c0cac81a7..f91563d5b 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -32,6 +32,7 @@ Version 1.4.6beta01 [December 29, 2010]
     png_ptr->flags) (David Raymond).
 
 version 1.4.6beta02 [December 31, 2010]
+  Fixed misspelled macros in contrib/pngminim (Cosmin)
 
 Send comments/corrections/commendations to glennrp at users.sourceforge.net
 or to png-mng-implement at lists.sf.net (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 2c3987a16..ba8d55099 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2741,6 +2741,7 @@ version 1.4.6beta01 [December 29, 2010]
     png_ptr->flags) (David Raymond).
 
 version 1.4.6beta02 [December 31, 2010]
+  Fixed misspelled macros in contrib/pngminim (Cosmin)
 
 Send comments/corrections/commendations to glennrp at users.sourceforge.net
 or to png-mng-implement at lists.sf.net (subscription required; visit
diff --git a/contrib/pngminim/encoder/pngusr.h b/contrib/pngminim/encoder/pngusr.h
index e4029b5c8..458deb443 100644
--- a/contrib/pngminim/encoder/pngusr.h
+++ b/contrib/pngminim/encoder/pngusr.h
@@ -70,6 +70,6 @@
 #define PNG_NO_EASY_ACCESS
 #define PNG_NO_USER_LIMITS
 #define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1143
+#define PNG_NO_TIME_RFC1123
 
 #endif /* MINWRPNGCONF_H */
diff --git a/contrib/pngminim/preader/pngusr.h b/contrib/pngminim/preader/pngusr.h
index bacb649b6..46c5e487a 100644
--- a/contrib/pngminim/preader/pngusr.h
+++ b/contrib/pngminim/preader/pngusr.h
@@ -63,6 +63,6 @@
 #define PNG_NO_EASY_ACCESS
 #define PNG_NO_USER_LIMITS
 #define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1143
+#define PNG_NO_TIME_RFC1123
 
 #endif /* MINPRDPNGCONF_H */