diff --git a/move_best b/move_best
new file mode 100755
index 000000000..c31480d4e
--- /dev/null
+++ b/move_best
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# For use in the pngzop project
+# Copyright 2013 by Glenn Randers-Pehrson
+# Released under the pngcrush license (equivalent to the libpng license)
+
+# Usage:
+# move_best *.zdat
+# assumes that for each *.zdat, *.idat.zlib exists
+#
+# moves the smaller of root.zdat or root.idat.zlib
+# to root.best
+
+for file in $*
+do
+root=`echo $file | sed -e "s/.zdat$//"`
+cp `picksmaller $root.zdat` $root.best
+done
diff --git a/picksmaller b/picksmaller
index 3c73a446b..d46fc2092 100755
--- a/picksmaller
+++ b/picksmaller
@@ -7,7 +7,7 @@
 # Selects the smaller of file.zdat (extracted from a PNG) or
 # file.idat.zlib (same but recompressed with zopfli)
 
-# picksmall file1 file2
+# picksmaller file1 file2
 
 for file in $*
 do