diff --git a/group-scheduling.rkt b/group-scheduling.rkt
index fbe3a2f..a8ad498 100644
--- a/group-scheduling.rkt
+++ b/group-scheduling.rkt
@@ -309,7 +309,7 @@
     (printf "Each person needs to meet ~a other people, " m0)
     (if (<= m0 (+ r1 (* r2 2) (* r3 3)))
         (printf "which is possible.~n~n")
-        (printf "which is impossilbe with this arrangement.~n~n"))))
+        (printf "which is impossible with this arrangement.~n~n"))))
 
 (define (print-test-rounds l n1 n2 n3)
   (printf "There are ~a people (binomial ~a)\n" (length l) (binomial (length l) 2))