diff --git a/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl b/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
index 71e4e8ac..8e1aa602 100644
--- a/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
+++ b/site_ansto/instrument/hipd/config/hmm/hmm_configuration.tcl
@@ -24,16 +24,16 @@ proc ::histogram_memory::init_OAT_TABLE {args} {
       switch $resolution {
       "hires" {
           FAT_TABLE -set MULTI_HOST_HISTO_STITCH_OVERLAP 32
-          OAT_TABLE -set X { 991.5 990.5 } NXC 992 Y { -0.5 0.5 } NYC 512 T { 0 20000 } NTC 1
+          OAT_TABLE -set X { -0.5 0.5 } NXC 992 Y { -0.5 0.5 } NYC 512 T { 0 20000 } NTC 1
         }
       "std_968x128" {
           FAT_TABLE -set MULTI_HOST_HISTO_STITCH_OVERLAP 8
-          OAT_TABLE -set X { 991.5 987.5 } NXC 248 Y { -0.5 3.5 } NYC 128 T { 0 20000 } NTC 1
+          OAT_TABLE -set X { -0.5 3.5 } NXC 248 Y { -0.5 3.5 } NYC 128 T { 0 20000 } NTC 1
         }
         default {
         # Default to std_968x128
           FAT_TABLE -set MULTI_HOST_HISTO_STITCH_OVERLAP 8
-          OAT_TABLE -set X { 991.5 987.5 } NXC 248 Y { -0.5 3.5 } NYC 128 T { 0 20000 } NTC 1
+          OAT_TABLE -set X { -0.5 3.5 } NXC 248 Y { -0.5 3.5 } NYC 128 T { 0 20000 } NTC 1
         }
       }
   } message ] {