diff --git a/library/constant_time.c b/library/constant_time.c
index 86cc066b0..832ded9e7 100644
--- a/library/constant_time.c
+++ b/library/constant_time.c
@@ -30,8 +30,6 @@
 #include "mbedtls/error.h"
 #include "mbedtls/platform_util.h"
 
-#include "../tests/include/test/constant_flow.h"
-
 #include <string.h>
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_SSL_SOME_SUITES_USE_MAC)