1 files changed, 2 insertions, 2 deletions
diff --git a/build.py b/build.py
index 08d6e28..cc4e2db 100644
--- a/build.py
+++ b/build.py
@@ -350,12 +350,12 @@ class Generator():
         
         if hasattr(args[0], 'held_object'):
             exe = args[0].held_object
+            if not isinstance(exe, Executable):
+                raise InvalidArguments('First generator argument must be an executable.')
         elif hasattr(args[0], 'ep'):
             exe = args[0].ep
         else:
             raise InvalidArguments('First generator argument must be an executable object.')
-        if not isinstance(exe, Executable):
-            raise InvalidArguments('First generator argument must be an executable.')
         self.exe = exe
         self.process_kwargs(kwargs)