diff --git a/runtime/functions b/runtime/functions
index 743889a..d2f1d86 100755
--- a/runtime/functions
+++ b/runtime/functions
@@ -65,7 +65,7 @@ set_postgresql_param() {
     local current=$(exec_as_postgres sed -n -e "s/^\("${key}" = '\)\([^ ']*\)\(.*\)$/\2/p" ${PG_CONF})
     if [[ "${current}" != "${value}" ]]; then
       echo "‣ Setting postgresql.conf parameter: ${key} = '${value}'"
-      exec_as_postgres sed -i "s|^[#]*[ ]*"${key}" = .*|"${key}" = '"${value}"'|" ${PG_CONF}
+      exec_as_postgres sed -i "s|^[#]*[ ]*${key} = .*|${key} = '${value}'|" ${PG_CONF}
     fi
   fi
 }
@@ -81,7 +81,7 @@ set_recovery_param() {
         true)  echo "‣ Setting primary_conninfo parameter: ${key}" ;;
         *) echo "‣ Setting primary_conninfo parameter: ${key} = '${value}'" ;;
       esac
-      exec_as_postgres sed -i "s|"${key}"=[^ ']*|"${key}"="${value}"|" ${PG_RECOVERY_CONF}
+      exec_as_postgres sed -i "s|${key}=[^ ']*|${key}=${value}|" ${PG_RECOVERY_CONF}
     fi
   fi
 }