diff --git a/fslanimate b/fslanimate
index 9e6f56848d34265e6fa1ea405eb81222f9da47b6..e20827e7392e4eb92864450851ee3df228d996b4 100755
--- a/fslanimate
+++ b/fslanimate
@@ -54,7 +54,7 @@ cd $tmpdir
 
 $FSLDIR/bin/avwsplit $im 
 for fnm in `$FSLDIR/bin/imglob vol*` ; do
-  num=`echo $fnm | $FSLDIR/bin/remove_ext | sed 's/vol//'`;  export num;
+  num=`$FSLDIR/bin/remove_ext $fnm | sed 's/vol//'`;  export num;
   echo $num; 
   $FSLDIR/bin/slicer $fnm -s 2 -a ${iout}_$num.pgm
   ${FSLCONVERT} ${iout}_$num.pgm ${iout}_$num.gif