diff --git a/ocmr_preproc b/ocmr_preproc
index 8a2a68822b7f715094c86fc714bdc64a857ade32..2bffceb9b0e24cd31d9b84c7a9eff0bbc2e9a7d5 100755
--- a/ocmr_preproc
+++ b/ocmr_preproc
@@ -19,11 +19,16 @@ nlp=`echo *lp2d_* |wc -w`
 if [ $nep -gt 1 ];then 
     a1=`imglob images_?_*ep2d_*`
     a2=`imglob images_??_*ep2d_*`
-    fslmerge -t big4D $a1 $a2
+    a3=`imglob images_???_*ep2d_*`
+    
+    fslmerge -t big4D $a1 $a2 $a3
+
 elif [ $nlp -gt 1 ];then 
     a1=`imglob images_?_*lp2d_*`
     a2=`imglob images_??_*lp2d_*`
-    fslmerge -t big4D $a1 $a2
+    a3=`imglob images_???_*lp2d_*`
+    fslmerge -t big4D $a1 $a2 $a3
+
 fi
 
 #nslices=${1}