diff --git a/pydatview/GUITools.py b/pydatview/GUITools.py
index ea03f7d..7122fed 100644
--- a/pydatview/GUITools.py
+++ b/pydatview/GUITools.py
@@ -3,7 +3,7 @@
 
 # For log dec tool
 from .damping import logDecFromDecay
-from .common import CHAR
+from .common import CHAR, Error
 
 
 # --------------------------------------------------------------------------------}