diff --git a/site_ansto/instrument/config/scan/scan_common_1.tcl b/site_ansto/instrument/config/scan/scan_common_1.tcl
index 0b206318..421cb2f5 100644
--- a/site_ansto/instrument/config/scan/scan_common_1.tcl
+++ b/site_ansto/instrument/config/scan/scan_common_1.tcl
@@ -302,6 +302,7 @@ proc ::scan::bm_count {sobj uobj point mode preset} {
 
 proc ::scan::bm_scan_prepare {sobj uobj} {
 
+    variable save_filetype
     variable check_instrument_ready
     variable force_scan
 
@@ -333,7 +334,7 @@ proc ::scan::bm_scan_prepare {sobj uobj} {
         
         array set bm_fb [::scan::hdb_bmonscan -list feedback]
         set ::histogram_memory::histmem_axes(SVAR) [SplitReply [sicslist [::scan::hdb_bmonscan -set scan_variable] hdb_path] ]
-        ::nexus::newfile BEAM_MONITOR data
+        ::nexus::newfile BEAM_MONITOR $save_filetype
         #stdscan prepare $sobj $uobj;
         clientput "Scan start: $scanstart, Scan step: $scanstep, Number of points: $numpoints"
         clientput "Datatype: BEAM_MONITOR"