diff --git a/CHANGES b/CHANGES
index 26820301..7753e5cf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+?? ???? 2007 - 2.5.0-dev3
+-------------------------
+
+ * Added Cygwin to the list of platforms not supporting the hidden
+   visibility attribute.
+
 21 June 2007 - 2.5.0-dev2
 -------------------------
 
diff --git a/apache2/modsecurity.h b/apache2/modsecurity.h
index faf6bb9d..2aa69faa 100644
--- a/apache2/modsecurity.h
+++ b/apache2/modsecurity.h
@@ -24,7 +24,7 @@ typedef struct msc_data_chunk msc_data_chunk;
 typedef struct msc_arg msc_arg;
 typedef struct msc_string msc_string;
 
-#if !(defined(WIN32) || defined(NETWARE) || defined(SOLARIS2))
+#if !(defined(WIN32) || defined(CYGWIN) || defined(NETWARE) || defined(SOLARIS2))
 #define DSOLOCAL __attribute__((visibility("hidden")))
 #else
 #define DSOLOCAL