diff --git a/test/maximal.mod b/test/maximal.mod
index 99512a4..89896eb 100644
--- a/test/maximal.mod
+++ b/test/maximal.mod
@@ -7,8 +7,11 @@ $DATA pheno.dta IGNORE=@
 $INPUT ID TIME AMT WGT APGR DV
 
 $INVALID
+
 $EST
 
+$ESTIMATE
+
 $SUBROUTINE ADVAN
 //#region
 $ABBREVIATED PROTECT