diff --git a/src/FindObject.cpp b/src/FindObject.cpp
index 16bee7e5..8d762240 100644
--- a/src/FindObject.cpp
+++ b/src/FindObject.cpp
@@ -99,6 +99,8 @@ bool FindObject::loadSession(const QString & path, const ParametersMap & customP
 			}
 		}
 
+		updateDetectorExtractor();
+
 		// load vocabulary
 		vocabulary_->load(in);