diff --git a/examples/ontology-from-excel/make_microstructure_onto.py b/examples/ontology-from-excel/make_microstructure_onto.py
index 19664e507..de0171fe5 100755
--- a/examples/ontology-from-excel/make_microstructure_onto.py
+++ b/examples/ontology-from-excel/make_microstructure_onto.py
@@ -4,7 +4,9 @@
 from ontopy.excelparser import create_ontology_from_excel
 from ontopy.utils import write_catalog
 
-ontology, catalog = create_ontology_from_excel("tool/microstructure.xlsx")
+ontology, catalog, errdict = create_ontology_from_excel(
+    "tool/microstructure.xlsx"
+)
 
 ontology.save("microstructure_ontology.ttl", format="turtle", overwrite=True)
 write_catalog(catalog)
diff --git a/ontopy/excelparser.py b/ontopy/excelparser.py
index a5eb266f8..5655293f4 100755
--- a/ontopy/excelparser.py
+++ b/ontopy/excelparser.py
@@ -41,7 +41,7 @@ def create_ontology_from_excel(  # pylint: disable=too-many-arguments
     imports: list = None,
     catalog: dict = None,
     force: bool = False,
-) -> Tuple[ontopy.ontology.Ontology, dict]:
+) -> Tuple[ontopy.ontology.Ontology, dict, dict]:
     """
     Creates an ontology from an Excel-file.
 
diff --git a/tools/excel2onto b/tools/excel2onto
index 23e067a1e..0e00f962e 100755
--- a/tools/excel2onto
+++ b/tools/excel2onto
@@ -43,7 +43,7 @@ def main():
         sys.exit(exc.code)  # Exit without traceback on invalid arguments
 
     try:
-        ontology, catalog = create_ontology_from_excel(
+        ontology, catalog, _ = create_ontology_from_excel(
             args.excelpath, force=args.force
         )
     except ExcelError as exc: