diff --git a/Rsconscript b/Rsconscript
index f40b8e0..8ca49a3 100644
--- a/Rsconscript
+++ b/Rsconscript
@@ -1,5 +1,5 @@
 configure do
-  check_command "mformat"
+  check_program "mformat"
 end
 
 build do