diff --git a/obsidian_import/obsidian.py b/obsidian_import/obsidian.py
index 6c2a869..e4a4590 100644
--- a/obsidian_import/obsidian.py
+++ b/obsidian_import/obsidian.py
@@ -13,6 +13,8 @@ import frontmatter
 import marko
 import marko.md_renderer
 
+assert hasattr(frontmatter, 'loads'), 'Incorrect frontmatter package installed. Use: pip install python-frontmatter'
+
 logger = getLogger(__name__)
 
 StatisticKey = str