diff --git a/compiler2/subtype.hh b/compiler2/subtype.hh
index 28503076a0295134b96221f11f144a8fa9f15135..e839612da301584cfb7e1b60df4e724dc78ec2a2 100644
--- a/compiler2/subtype.hh
+++ b/compiler2/subtype.hh
@@ -117,7 +117,7 @@ public:
   bool MaxExclusive() const;
   /** Return the length restriction object.
    *
-   * @ore selection is STP_LENGTH, or else FATAL_ERROR
+   * @pre selection is STP_LENGTH, or else FATAL_ERROR
    */
   Ttcn::LengthRestriction *Length() const;
   Ttcn::PatternString *Pattern() const;