diff --git a/src/compute.c b/src/compute.c
index 59a48ec..a58455e 100644
--- a/src/compute.c
+++ b/src/compute.c
@@ -117,7 +117,7 @@ static inline t_complex fct(t_complex a, guint32 n, gint32 p1, gint32 p2)   /* p
 		an = 0.002;
 		co = cos(an);
 		si = sin(an);
-		circle_size = height * 0.25;
+		//circle_size = height * 0.25;
 		fact = 1 + cos(atan(a.x / (a.y + 0.00001)) * 6) * 0.02;
 		b.x = (co * a.x - si * a.y);
 		b.y = (si * a.x + co * a.y);
@@ -221,7 +221,6 @@ void compute_vector_field_destroy(vector_field_t *vector_field)
 
 	g_free(vector_field->vector);
 	g_free(vector_field);
-	vector_field = NULL;
 }
 
 void compute_quit()
diff --git a/src/display.c b/src/display.c
index d6d10c0..8e6fe99 100644
--- a/src/display.c
+++ b/src/display.c
@@ -192,7 +192,7 @@ static void line(gint32 x1, gint32 y1, gint32 x2, gint32 y2, gint32 c)
 			dxy = -1;
 		else
 			dxy = 1;
-		for (y1 = y1; y1 < y2; y1++) {
+		for (; y1 < y2; y1++) {
 			cxy += dx;
 			if (cxy >= dy) {
 				x1 += dxy;
@@ -211,7 +211,7 @@ static void line(gint32 x1, gint32 y1, gint32 x2, gint32 y2, gint32 c)
 		else
 			dxy = 1;
 
-		for (x1 = x1; x1 < x2; x1++) {
+		for (; x1 < x2; x1++) {
 			cxy += dy;
 			if (cxy >= dx) {
 				y1 += dxy;
diff --git a/src/infinity.c b/src/infinity.c
index b1e8fef..f1e14d4 100644
--- a/src/infinity.c
+++ b/src/infinity.c
@@ -234,7 +234,7 @@ static void handle_window_event(SDL_Event *event) {
 			SDL_Log("Window %d restored", event->window.windowID);
 			break;*/
 		case SDL_WINDOWEVENT_CLOSE:
-			SDL_Log("Window %d closed", event->window.windowID);
+			//SDL_Log("Window %d closed", event->window.windowID);
 			player->disable_plugin();
 			break;
 		default: