diff --git a/content/case.md b/content/case.md
index 9e42313..ca685df 100644
--- a/content/case.md
+++ b/content/case.md
@@ -31,7 +31,7 @@ else:
 
 proc positiveOrNegative(num: int): string =
   result = case num:
-    of low(int)..-1:
+    of low(int).. -1:
       "negative"
     of 0:
       "zero"