diff --git a/library/bignum.c b/library/bignum.c
index 846f5a3..b147a54 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -41,7 +41,7 @@
 #include "mbedtls/bn_mul.h"
 #include "mbedtls/platform_util.h"
 #include "mbedtls/error.h"
-#include "constant_time.h"
+#include "constant_time_internal.h"
 
 #include <string.h>
 
diff --git a/library/constant_time.c b/library/constant_time.c
index 3836d54..651bbcb 100644
--- a/library/constant_time.c
+++ b/library/constant_time.c
@@ -23,7 +23,7 @@
  */
 
 #include "common.h"
-#include "constant_time.h"
+#include "constant_time_internal.h"
 #include "mbedtls/constant_time.h"
 #include "mbedtls/error.h"
 #include "mbedtls/platform_util.h"
diff --git a/library/constant_time.h b/library/constant_time_internal.h
similarity index 100%
rename from library/constant_time.h
rename to library/constant_time_internal.h
diff --git a/library/rsa.c b/library/rsa.c
index 3866b73..a395542 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -44,7 +44,7 @@
 #include "mbedtls/oid.h"
 #include "mbedtls/platform_util.h"
 #include "mbedtls/error.h"
-#include "constant_time.h"
+#include "constant_time_internal.h"
 #include "mbedtls/constant_time.h"
 
 #include <string.h>
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 58f41be..59cb9d2 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -44,7 +44,7 @@
 #include "mbedtls/error.h"
 #include "mbedtls/platform_util.h"
 #include "mbedtls/version.h"
-#include "constant_time.h"
+#include "constant_time_internal.h"
 #include "mbedtls/constant_time.h"
 
 #include <string.h>
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 8ef8e90..d9f226c 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -34,7 +34,7 @@
 #include "mbedtls/debug.h"
 #include "mbedtls/error.h"
 #include "mbedtls/platform_util.h"
-#include "constant_time.h"
+#include "constant_time_internal.h"
 #include "mbedtls/constant_time.h"
 
 #include <string.h>