diff --git a/matlab/check.m b/matlab/check.m
index a2afc7b9f02f07d7fb085c362ff535e0ee66f95f..f8b534edc3de6bcf5ddbbf794e5b536ef6e81e97 100644
--- a/matlab/check.m
+++ b/matlab/check.m
@@ -107,7 +107,7 @@ if options.noprint == 0
     if result
         disp('The rank condition is verified.')
     else
-        disp('The rank conditions ISN''T verified!')
+        disp('The rank conditions AREN''T verified!')
     end
     skipline()
 end