diff --git a/create_key_config.sh b/create_key_config.sh
index d585c0d..a05e084 100755
--- a/create_key_config.sh
+++ b/create_key_config.sh
@@ -183,10 +183,16 @@ fi
 [[ "${SERVER_CIPHER,,}" = "" ]] && SERVER_CIPHER="BF-CBC"
 if [[ -z "$LZO_COMPRESSION" ]]; then
    LZO_COMPRESSION=true
+elif [[ "${LZO_COMPRESSION,,}" = "yes" ]] ; then
+   LZO_COMPRESSION=true
+elif  [[ "${LZO_COMPRESSION,,}" = "no" ]] ; then
+   LZO_COMPRESSION=false
+elif [[ "$LZO_COMPRESSION" != "true" ]] && [[ "$LZO_COMPRESSION" != "false" ]] ; then
+   fatal "Wrong value for variable 'LZO_COMPRESSION' (${LZO_COMPRESSION})"
+elif ! $LZO_COMPRESSION ; then
+   LZO_COMPRESSION=false
 elif $LZO_COMPRESSION ; then
    LZO_COMPRESSION=true
-else
-   LZO_COMPRESSION=false
 fi
 
 EASY_RSA_DIR="${OPENVPN_BASE_DIR}/easy-rsa"