diff --git a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
index 9f7bce19b..1c6299153 100644
--- a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
+++ b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
@@ -4959,6 +4959,8 @@ int set_detector_position(int file_des) {
 
     // only set
     if (Server_VerifyLock() == OK) {
+        // if in update mode, there is no need to do this (also detector not set
+        // up)
         if (!updateFlag && check_detector_idle("configure mac") == OK) {
             maxydet = args[0];
             detectorId = args[1];