diff --git a/ctaocrypt/include/os_settings.h b/ctaocrypt/include/ctc_settings.h
similarity index 99%
rename from ctaocrypt/include/os_settings.h
rename to ctaocrypt/include/ctc_settings.h
index 0fd7b826b..d0a742c86 100644
--- a/ctaocrypt/include/os_settings.h
+++ b/ctaocrypt/include/ctc_settings.h
@@ -1,4 +1,4 @@
-/* os_settings.h
+/* ctc_settings.h
  *
  * Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
  *
diff --git a/ctaocrypt/include/ctc_types.h b/ctaocrypt/include/ctc_types.h
index ec8169153..68ce42b27 100644
--- a/ctaocrypt/include/ctc_types.h
+++ b/ctaocrypt/include/ctc_types.h
@@ -23,7 +23,7 @@
 #ifndef CTAO_CRYPT_TYPES_H
 #define CTAO_CRYPT_TYPES_H
 
-#include "os_settings.h"
+#include "ctc_settings.h"
 
 #ifdef HAVE_CONFIG_H
     #include "ctc_config.h"
diff --git a/ctaocrypt/src/cyassl_memory.c b/ctaocrypt/src/cyassl_memory.c
index fa549c946..10ca4ab13 100644
--- a/ctaocrypt/src/cyassl_memory.c
+++ b/ctaocrypt/src/cyassl_memory.c
@@ -22,7 +22,7 @@
 /* submitted by eof */
 
 
-#include "os_settings.h"
+#include "ctc_settings.h"
 
 #ifdef USE_CYASSL_MEMORY
 
diff --git a/ctaocrypt/src/integer.c b/ctaocrypt/src/integer.c
index 9fd15d8b7..369c0ad4e 100644
--- a/ctaocrypt/src/integer.c
+++ b/ctaocrypt/src/integer.c
@@ -25,7 +25,7 @@
  */
 
 
-#include "os_settings.h"     /* in case user set USE_FAST_MATH there */
+#include "ctc_settings.h"     /* in case user set USE_FAST_MATH there */
 
 #ifndef USE_FAST_MATH
 
diff --git a/ctaocrypt/src/logging.c b/ctaocrypt/src/logging.c
index ffccb6dbe..f86226170 100644
--- a/ctaocrypt/src/logging.c
+++ b/ctaocrypt/src/logging.c
@@ -21,7 +21,7 @@
 
 /* submitted by eof */
 
-#include "os_settings.h"
+#include "ctc_settings.h"
 #include "logging.h"
 #include "ctc_error.h"
 
diff --git a/ctaocrypt/src/tfm.c b/ctaocrypt/src/tfm.c
index a3a812ae2..f73945379 100644
--- a/ctaocrypt/src/tfm.c
+++ b/ctaocrypt/src/tfm.c
@@ -29,7 +29,7 @@
  *  to fit CyaSSL's needs.
  */
 
-#include "os_settings.h"     /* in case user set USE_FAST_MATH there */
+#include "ctc_settings.h"     /* in case user set USE_FAST_MATH there */
 
 #ifdef USE_FAST_MATH
 
diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 1e9b6b60d..6465d71e5 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -29,7 +29,7 @@
 #ifndef CYASSL_OPENSSL_H_
 #define CYASSL_OPENSSL_H_
 
-#include "os_settings.h"   /* for users not using preprocessor flags */
+#include "ctc_settings.h"   /* for users not using preprocessor flags */
 
 #ifndef NO_FILESYSTEM
     #include <stdio.h>   /* ERR_print fp */
diff --git a/include/sniffer.h b/include/sniffer.h
index f12126b88..61f5ca2dd 100644
--- a/include/sniffer.h
+++ b/include/sniffer.h
@@ -24,7 +24,7 @@
 #ifndef CYASSL_SNIFFER_H
 #define CYASSL_SNIFFER_H
 
-#include "os_settings.h"
+#include "ctc_settings.h"
 
 #ifdef _WIN32
     #ifdef SSL_SNIFFER_EXPORTS