diff --git a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/3-1.c b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/3-1.c
index f1ceb9e19f..634132460b 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/3-1.c
+++ b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/3-1.c
@@ -26,7 +26,7 @@
 #include "posixtest.h"
 
 /* Global pthread_once_t object */
-pthread_once_t once_control;
+pthread_once_t once_control = PTHREAD_ONCE_INIT;
 
 /* Keeps track of how many times the init function has been called. */
 int init_flag;
@@ -68,7 +68,6 @@ void *an_init_func2()
 int main()
 {
 	pthread_t new_th;
-	once_control = PTHREAD_ONCE_INIT;
 	init_flag=0;
 	
 	/* Create a thread that will execute the first call to pthread_once() */
diff --git a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/6-1.c b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/6-1.c
index 221ba6a665..11585d6c93 100644
--- a/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/6-1.c
+++ b/src/tests/system/libroot/posix/posixtestsuite/conformance/interfaces/pthread_once/6-1.c
@@ -181,7 +181,7 @@ void initializer( void )
 void * test( void * arg )
 {
 	int ret = 0;
-	pthread_once_t once_ctl;
+	pthread_once_t once_ctl = PTHREAD_ONCE_INIT;
 
 	/* We don't block the signals SIGUSR1 and SIGUSR2 for this THREAD */
 	ret = pthread_sigmask( SIG_UNBLOCK, &usersigs, NULL );
@@ -196,7 +196,6 @@ void * test( void * arg )
 	{
 		count_ope++;
 
-		once_ctl = PTHREAD_ONCE_INIT;
 		init_ctl = 0;
 
 		ret = pthread_once( &once_ctl, initializer );