diff --git a/src/server.h b/src/server.h
index 3a0ad9a..a8eb20c 100644
--- a/src/server.h
+++ b/src/server.h
@@ -1,3 +1,4 @@
+#include <pthread.h>
 #include <stdbool.h>
 #include <sys/ioctl.h>
 #include <sys/queue.h>