diff --git a/translators/build_zip b/translators/build_zip
index 387cc1f85..9dc0abf82 100755
--- a/translators/build_zip
+++ b/translators/build_zip
@@ -10,11 +10,11 @@ counter=0;
 for file in *.js; do
 	newfile=$counter.js;
 	cp "$file" output/$newfile;
-	counter=`echo $counter + 1 | bc`;
+	counter=$(($counter+1));
 done;
 
 cd output
 zip ../translators.zip *
 cd ..
 rm -rf output
-mv translators.zip ..
\ No newline at end of file
+mv translators.zip ..