diff --git a/addon/flamenco/projects.py b/addon/flamenco/projects.py
index fb551b5e..6d4281d8 100644
--- a/addon/flamenco/projects.py
+++ b/addon/flamenco/projects.py
@@ -45,7 +45,7 @@ def _finder_subversion(blendfile: Path) -> Path:
 def _search_path_marker(blendfile: Path, marker_path: str) -> Path:
     """Go up the directory hierarchy until a file or directory 'marker_path' is found."""
 
-    blendfile_dir = bpathlib.make_absolute(blendfile).parent
+    blendfile_dir: Path = bpathlib.make_absolute(blendfile).parent
 
     directory = blendfile_dir
     while True: