diff --git a/script/DelayScan.py b/script/DelayScan.py
index 28f41db..c1f79e8 100644
--- a/script/DelayScan.py
+++ b/script/DelayScan.py
@@ -193,7 +193,7 @@ def Scan(Dtime):
             for j in a2:                    
                 a2r.append(j)'''
             a2r = []
-            while time.time() < t_end
+            while time.time() < t_end:
                 a2t = MCPArray2.read().tolist()
                 a2r = [a2r[i]+a2t[i] for i in xrange(len(a2t))]
                 time.sleep(SamplingTime.read()*0.001)