diff --git a/programs/fuzz/common.c b/programs/fuzz/common.c
index c6d4976..c554bc6 100644
--- a/programs/fuzz/common.c
+++ b/programs/fuzz/common.c
@@ -5,7 +5,7 @@
 #include <stdlib.h>
 #include "mbedtls/ctr_drbg.h"
 
-#if defined(MBEDTLS_HAVE_TIME)
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)
 mbedtls_time_t dummy_constant_time( mbedtls_time_t* time )
 {
     (void) time;