diff --git a/xtreme_bec/scans/otf_scan.py b/xtreme_bec/scans/otf_scan.py
index 5a71ea7..8c7e3ed 100644
--- a/xtreme_bec/scans/otf_scan.py
+++ b/xtreme_bec/scans/otf_scan.py
@@ -152,7 +152,7 @@ class OTFScan(ScanBase):
         """
 
         self.dev.signals.store_updates.put(1)
-        status = self.mono.set(self.e2)
+        status = self.actions.set(self.mono, self.e2, wait=False)
 
         while not status.done:
             self.at_each_point()