diff --git a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_mutex_timedlock/2-1.c b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_mutex_timedlock/2-1.c
index a8d64e016b..6b0a1c7096 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_mutex_timedlock/2-1.c
+++ b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_mutex_timedlock/2-1.c
@@ -128,6 +128,8 @@ void *f1(void *parm)
 	currsec1.tv_sec = ts.tv_sec;
 	currsec1.tv_usec = ts.tv_nsec / 1000; 
 #else
+	(void)ts;
+	(void)rc;
 	gettimeofday(&currsec1, NULL);
 #endif
 	/* Absolute time, not relative. */
diff --git a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedrdlock/3-1.c b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedrdlock/3-1.c
index 1e83b07db7..4398e38af9 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedrdlock/3-1.c
+++ b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedrdlock/3-1.c
@@ -63,6 +63,7 @@ static void* fn_rd(void *arg)
 	currsec1.tv_sec = ts.tv_sec;
 	currsec1.tv_usec = ts.tv_nsec / 1000;
 #else
+	(void)ts;
 	gettimeofday(&currsec1, NULL);
 #endif
 	/* Absolute time, not relative. */
diff --git a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedwrlock/3-1.c b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedwrlock/3-1.c
index 89841c375c..28f9818487 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedwrlock/3-1.c
+++ b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_rwlock_timedwrlock/3-1.c
@@ -69,6 +69,7 @@ static void* fn_wr(void *arg)
 	currsec1.tv_sec = ts.tv_sec;
 	currsec1.tv_usec = ts.tv_nsec / 1000; 
 #else
+	(void)ts;
 	gettimeofday(&currsec1, NULL);
 #endif
 	/* Absolute time, not relative. */