diff --git a/prism/CHANGELOG.txt b/prism/CHANGELOG.txt
index 1002aa5a..a5e3f6cd 100644
--- a/prism/CHANGELOG.txt
+++ b/prism/CHANGELOG.txt
@@ -28,7 +28,7 @@ Version 4.2 (beta first released 12/5/2014)
   - additional graph zoom functionality on popup menu
 
 * Updates to build process
-  - fixed building on new versions of Cygwin (Windows)
+  - fixed building on new versions of Cygwin (32/64-bit Windows)
   - update CUDD to version 2.5.0
 
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