diff --git a/spreadsheet.py b/spreadsheet.py
index e5612e8..38a49ad 100644
--- a/spreadsheet.py
+++ b/spreadsheet.py
@@ -5,7 +5,7 @@ from slic.utils import as_shortcut
 
 class PVStringAdjustable(PVAdjustable):
     def get_current_value(self):
-        return self.pvs.readback.get(as_string=True).strip()
+        return str(self.pvs.readback.get(as_string=True)).strip()
 
 
 n_unds = [6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22]  # 14 is the CHIC