diff --git a/autoddoc.cfg b/autoddoc.cfg
index 1268be9..3e61855 100644
--- a/autoddoc.cfg
+++ b/autoddoc.cfg
@@ -34,4 +34,4 @@ ignore = test/*, examples/*, docsrc/*, autoddoc/*, yaml.d, unittest.d, cdc.d, dy
 [DDOC]
 # Command to use to generate the documentation. 
 # Can be modified e.g. to use GDC or LDC.
-ddoc_command = dmd -d -c -o-
+ddoc_command = dmd -d -c -o- -Isource