diff --git a/install/scripts/install_ocaml.sh b/install/scripts/install_ocaml.sh
index 78e1ef9..e6f0f0b 100755
--- a/install/scripts/install_ocaml.sh
+++ b/install/scripts/install_ocaml.sh
@@ -6,8 +6,6 @@ set -e
 cd .. ; QMCCHEM_PATH="$PWD" ; cd -
 PACKAGES="core cryptokit ocamlfind sexplib" # ppx_sexp_conv"
 
-declare -i i
-
 # return 0 if program version is equal or greater than check version
 check_version () {
     if [[ $1 == $2 ]]
@@ -34,7 +32,7 @@ check_version () {
         fi
         if ((10#${ver1[i]} < 10#${ver2[i]}))
         then
-            return 2
+            return 0
         fi
     done
     return 0