diff --git a/src/cacaclock.c b/src/cacaclock.c
index fa0758a..afd2978 100644
--- a/src/cacaclock.c
+++ b/src/cacaclock.c
@@ -39,6 +39,8 @@ int main(int argc, char *argv[]) {
 	caca_canvas_t *cv;
 	caca_canvas_t *figcv;
 	caca_display_t *dp;
+	uint32_t w, h;
+
 
 	char *font = "/usr/share/figlet/mono12.tlf";
 	if(argc==2) font = argv[1];
@@ -65,6 +67,9 @@ int main(int argc, char *argv[]) {
 		return -1;
 	}
 
+	w = caca_get_canvas_width (cv);
+	h = caca_get_canvas_height(cv);	
+
 	for(;;) {
 		caca_event_t ev;