diff --git a/src/build/targets.py b/src/build/targets.py
index 8d41ca352..2bcf8f1d0 100644
--- a/src/build/targets.py
+++ b/src/build/targets.py
@@ -146,7 +146,7 @@ class TargetRegistry:
 
         requirements = property_set.refine_from_user_input(
             project.get("requirements"), specification,
-            project.project_module, project.get("location"))
+            project.project_module(), project.get("location"))
 
         return requirements