diff --git a/Lib/fontmake/font_project.py b/Lib/fontmake/font_project.py
index 35f3e38e..7936da6d 100644
--- a/Lib/fontmake/font_project.py
+++ b/Lib/fontmake/font_project.py
@@ -1151,6 +1151,7 @@ def run_from_designspace(
                 f"expected path or DesignSpaceDocument, found {type(designspace.__name__)}"
             )
 
+        logger.info("Loading %s DesignSpace source UFOs", len(designspace.sources))
         designspace.loadSourceFonts(opener=self.open_ufo)
 
         # if no --feature-writers option was passed, check in the designspace's