diff --git a/premise_gwp/__init__.py b/premise_gwp/__init__.py
index d45c530..72de97d 100644
--- a/premise_gwp/__init__.py
+++ b/premise_gwp/__init__.py
@@ -93,7 +93,9 @@ def add_premise_gwp():
                     category.drop_unlinked()
 
         # check that no flow is unlinked
-        assert len(list(category.unlinked)) == 0
+        assert len(list(category.unlinked)) == 0, "Unlinked flows: {}".format(
+            list(category.unlinked)
+        )
 
         # write method
         category.write_methods(overwrite=True, verbose=True)
diff --git a/premise_gwp/version.py b/premise_gwp/version.py
index dc481b5..3277938 100644
--- a/premise_gwp/version.py
+++ b/premise_gwp/version.py
@@ -1 +1 @@
-version = (0, 9, 2)
+version = (0, 9, 3)