diff --git a/CUDA/bedpostx_postproc_gpu.sh b/CUDA/bedpostx_postproc_gpu.sh
index ba93e371481fd3b0b140c9813319fcfd74d06816..fd76ac0879f5ba46f94effc5b277ed56803ab637 100644
--- a/CUDA/bedpostx_postproc_gpu.sh
+++ b/CUDA/bedpostx_postproc_gpu.sh
@@ -32,11 +32,11 @@ do
 done
 
 if [ `${FSLDIR}/bin/imtest ${subjdir}.bedpostX/mean_f1samples` -eq 1 ];then
-    ${FSLDIR}/bin/fslmaths ${subjdir}.bedpostX/mean_f1samples -mul 0 ${subjdir}.bedpostX/mean_fsamples
+    ${FSLDIR}/bin/fslmaths ${subjdir}.bedpostX/mean_f1samples -mul 0 ${subjdir}.bedpostX/mean_fsumsamples
     fib=1
     while [ $fib -le $numfib ]
     do
-	 ${FSLDIR}/bin/fslmaths ${subjdir}.bedpostX/mean_fsamples -add ${subjdir}.bedpostX/mean_f${fib}samples ${subjdir}.bedpostX/mean_fsamples
+	 ${FSLDIR}/bin/fslmaths ${subjdir}.bedpostX/mean_fsumsamples -add ${subjdir}.bedpostX/mean_f${fib}samples ${subjdir}.bedpostX/mean_fsumsamples
 	fib=$(($fib + 1))
     done	
 fi