diff --git a/docs/userguide b/docs/userguide
index 2910e29b..75179664 100644
--- a/docs/userguide
+++ b/docs/userguide
@@ -284,7 +284,8 @@ you can press Mod1, click into a window using your left mouse button and drag
 it to the position you want it at.
 
 When holding the floating modifier, you can resize a floating window by pressing
-the right mousebutton on it and moving around holding it.
+the right mousebutton on it and moving around holding it. If you hold the shift
+button aswell, the resize will be proportional.
 
 *Syntax*:
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