diff --git a/src/manif.c b/src/manif.c
index 59c5f3b..32984c8 100644
--- a/src/manif.c
+++ b/src/manif.c
@@ -43,7 +43,7 @@ static void draw(void) {
   static double t0 = 0;
   double dt = get_dt(&t0, GL_TRUE);
 
-  glClearColor(0.2f, 0.2f, 0.8f, 1);
+  glClearColor(0.2f, 0.2f, 0.8f, 1); // couleur ciel
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   glUseProgram(_pId);