diff --git a/library/timing.c b/library/timing.c
index 8bc1b4278..2777f6f5e 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -399,8 +399,9 @@ int mbedtls_timing_self_test(int verbose)
     int hardfail = 0;
     struct mbedtls_timing_hr_time hires;
     uint32_t a = 0, b = 0;
-    mbedtls_timing_delay_context ctx = {};
+    mbedtls_timing_delay_context ctx;
 
+    memset(ctx, 0, sizeof(ctx));
     if (verbose != 0) {
         mbedtls_printf("  TIMING tests note: will take some time!\n");
     }