diff --git a/thpool.c b/thpool.c
index 4c1aef7..52163f7 100644
--- a/thpool.c
+++ b/thpool.c
@@ -24,7 +24,8 @@
 #include <time.h>
 #if defined(__linux__)
 #include <sys/prctl.h>
-#elif defined(__FreeBSD__)
+#endif
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
 #include <pthread_np.h>
 #endif
 
@@ -341,8 +342,8 @@ static void* thread_do(struct thread* thread_p){
 	prctl(PR_SET_NAME, thread_name);
 #elif defined(__APPLE__) && defined(__MACH__)
 	pthread_setname_np(thread_name);
-#elif defined(__FreeBSD__)
-	pthread_set_name_np(pthread_self(), thread_name);
+#elif defined(__FreeBSD__) || defined(__OpenBSD__)
+    pthread_set_name_np(thread_p->pthread, thread_name);
 #else
 	err("thread_do(): pthread_setname_np is not supported on this system");
 #endif