diff --git a/extra/benchmark/binary-trees/binary-trees.factor b/extra/benchmark/binary-trees/binary-trees.factor
index 6e63877989..bd3d460961 100644
--- a/extra/benchmark/binary-trees/binary-trees.factor
+++ b/extra/benchmark/binary-trees/binary-trees.factor
@@ -53,3 +53,5 @@ M: f item-check drop 0 ;
 
 : binary-trees-main ( -- )
     16 binary-trees ;
+
+MAIN: binary-trees-main