diff --git a/src/main.c b/src/main.c
index f784f838..e252b105 100644
--- a/src/main.c
+++ b/src/main.c
@@ -459,6 +459,7 @@ int main(int argc, char *argv[])
 	lock.l_whence = SEEK_SET;
 	lock.l_start = 0;
 	lock.l_len = 0;
+	lock.l_pid = 0;
 	fcntl(lfd, F_GETLK, &lock);
 	close(lfd);
 	if (lock.l_type != F_UNLCK) {