diff --git a/CHANGES b/CHANGES
index e5a80df8..7a289c4e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+2015-08-10
+
+* The Data Matrix encoder was amended to make version=RxC synonymous with rows=R columns=C.
+* The MicroPDF417 encoder was amended to make version=CxR synonymous with rows=R columns=C.
+
+
 2015-07-14
 
 * A bug in the input validation of Code 39 Extended symbols was fixed to permit symbols containing fewer than four characters.
diff --git a/src/datamatrix.ps b/src/datamatrix.ps
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diff --git a/src/micropdf417.ps b/src/micropdf417.ps
index c6f18512..94c5640e 100644
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