diff --git a/Makefile b/Makefile
index 7847081c2..6b509b075 100644
--- a/Makefile
+++ b/Makefile
@@ -61,7 +61,7 @@ check:
 
 doccheck:
 	py-check-docstrings --force \
-	  dosagelib \
+	  dosagelib/*.py \
 	  dosage \
 	  *.py