diff --git a/invesalius/constants.py b/invesalius/constants.py
index 98fddbf..b4c1f0f 100644
--- a/invesalius/constants.py
+++ b/invesalius/constants.py
@@ -505,7 +505,6 @@ VTK_WARNING = 0
 
 #----------------------------------------------------------
 
-ID_MODE_NAVIGATION: object
 [ID_DICOM_IMPORT, ID_PROJECT_OPEN, ID_PROJECT_SAVE_AS, ID_PROJECT_SAVE,
 ID_PROJECT_CLOSE, ID_PROJECT_INFO, ID_SAVE_SCREENSHOT, ID_DICOM_LOAD_NET,
 ID_PRINT_SCREENSHOT, ID_IMPORT_OTHERS_FILES, ID_PREFERENCES, ID_DICOM_NETWORK,
--
libgit2 0.21.2