diff --git a/Makefile b/Makefile
index 1121af4..6871992 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 bspc:
-	cc bspc.c -o bspc -lxcb
+	cc bspc.c -o bspc -lxcb -Wall -Wextra -std=c99
 
 clean:
 	rm bspc
diff --git a/bspc.c b/bspc.c
index cc20af8..9251dc2 100644
--- a/bspc.c
+++ b/bspc.c
@@ -35,6 +35,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <xcb/xcb.h>
 #include <poll.h>
 #include <unistd.h>
 #include <string.h>
@@ -253,7 +254,7 @@ char *send_msg_to_bspwm(char *args[], int count)
 		err("Failed to send the data.\n");
 	}
 
-	int ret = EXIT_SUCCESS, nb;
+	int nb;
 
 	struct pollfd fds[] = {
 		{sock_fd, POLLIN, 0},