diff --git a/script/MultiRegionScan.py b/script/MultiRegionScan.py
index eeec9897..47cd4abb 100644
--- a/script/MultiRegionScan.py
+++ b/script/MultiRegionScan.py
@@ -99,7 +99,7 @@ class ImageReader(ReadonlyRegisterBase, ReadonlyRegisterMatrix):
         ny = Scienta.slices.read()
         return ny
 
-def setup_live_plots(regions)
+def setup_live_plots(regions):
     global live_plots
     global current_region_index
     names = [region['name'] for region in regions]