diff --git a/src/world.c b/src/world.c
index 50d71c2..79c3c3e 100644
--- a/src/world.c
+++ b/src/world.c
@@ -92,9 +92,10 @@ void worldSetHeight(int h)
 
 double worldGetFrameRate()
 	{ return frameRate; }
-void worldSetFrameRate(double frameRate) {
-	if (!(frameRate > 1)) frameRate = 1;
-	if (!(frameRate < 100)) frameRate = 100;
+void worldSetFrameRate(double fps) {
+	if (!(fps > 1)) fps = 1;
+	if (!(fps < 100)) fps = 100;
+	frameRate = fps;
 }
 
 double worldGetTimeStep()
@@ -210,10 +211,11 @@ static gboolean draw(GtkWidget *widget G_GNUC_UNUSED, cairo_t *cr, gpointer data
 	cairo_paint(cr);
 	cairo_restore(cr);
 	
-	if (!stopped) gtk_widget_queue_draw(window);
-	
-	delta = currentTime - g_get_monotonic_time();
-	if (delta > 100) g_usleep(delta - 100);
+	if (!stopped) {
+		gtk_widget_queue_draw(window);
+		delta = currentTime - g_get_monotonic_time();
+		if (delta > 100) g_usleep(delta - 100);
+	}
 	
 	return TRUE;
 }