diff --git a/ctaocrypt/include/ctc_settings.h b/ctaocrypt/include/ctc_settings.h
index d0a742c86d..5f4466e34e 100644
--- a/ctaocrypt/include/ctc_settings.h
+++ b/ctaocrypt/include/ctc_settings.h
@@ -51,7 +51,7 @@
     #include "ctc_config.h"   /* may not want global HAVE_CONFIG_H */
 #endif
 
-#include "visibility.h"
+#include "ctc_visibility.h"
 
 #ifdef IPHONE
     #define SIZEOF_LONG_LONG 8
diff --git a/ctaocrypt/include/visibility.h b/ctaocrypt/include/ctc_visibility.h
similarity index 99%
rename from ctaocrypt/include/visibility.h
rename to ctaocrypt/include/ctc_visibility.h
index 8ed3144c12..e03e0f0ccc 100644
--- a/ctaocrypt/include/visibility.h
+++ b/ctaocrypt/include/ctc_visibility.h
@@ -1,4 +1,4 @@
-/* visibility.h
+/* ctc_visibility.h
  *
  * Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
  *