diff --git a/poincare/include/poincare/zoom.h b/poincare/include/poincare/zoom.h
index 5339d5c50..56bd45871 100644
--- a/poincare/include/poincare/zoom.h
+++ b/poincare/include/poincare/zoom.h
@@ -4,6 +4,12 @@
 #include <poincare/context.h>
 #include <ion/display.h>
 
+/* FIXME : This class is concerned with manipulating the ranges of graphing
+ * window, often represented by four float xMin, xMax, yMin, yMax. Handling
+ * those same four values has proven repetititve, tredious, and prone to error.
+ * This code could benefit from a data structure to regroup those values in a
+ * single object. */
+
 namespace Poincare {
 
 class Zoom {