diff --git a/services/std_svc/std_svc_setup.c b/services/std_svc/std_svc_setup.c
index 8f63c73..23f13ab 100644
--- a/services/std_svc/std_svc_setup.c
+++ b/services/std_svc/std_svc_setup.c
@@ -142,10 +142,12 @@
 	}
 #endif
 
+#if TRNG_SUPPORT
 	if (is_trng_fid(smc_fid)) {
 		return trng_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
 				flags);
 	}
+#endif
 
 	switch (smc_fid) {
 	case ARM_STD_SVC_CALL_COUNT: