diff --git a/libowlps/libowlps.c b/libowlps/libowlps.c
index 91314dd..af8621d 100644
--- a/libowlps/libowlps.c
+++ b/libowlps/libowlps.c
@@ -15,6 +15,7 @@
 #include <inttypes.h>
 #include <string.h>
 #include <time.h>
+#include <sys/time.h>
 #include <signal.h>
 
 #include <arpa/inet.h>
@@ -177,14 +178,26 @@ int owl_msleep(uint32_t time_ms)
 int owl_timestamp_now(owl_timestamp *const now)
 {
   int ret ;
+
+#if _POSIX_TIMERS > 0
   struct timespec now_ts ;
-  if ((ret = clock_gettime(CLOCK_REALTIME, &now_ts)))
+  ret = clock_gettime(CLOCK_REALTIME, &now_ts) ;
+#else // _POSIX_TIMERS
+  struct timeval now_ts ;
+  ret = gettimeofday(&now_ts, NULL) ;
+#endif // _POSIX_TIMERS
+
+  if (ret)
     {
       perror("Cannot get the current time") ;
       return ret ;
     }
 
+#if _POSIX_TIMERS > 0
   owl_timespec_to_timestamp(&now_ts, now) ;
+#else // _POSIX_TIMERS
+  owl_timeval_to_timestamp(&now_ts, now) ;
+#endif // _POSIX_TIMERS
 
   return 0 ;
 }