diff --git a/entrypoint.sh b/entrypoint.sh
index f83c0f5..faf1155 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -24,18 +24,17 @@ sqlCmd='/tmp/cmd.sql'
 MYSQL_SKIP_NAME_RESOLVE=$(convertCase "$MYSQL_SKIP_NAME_RESOLVE")
 
 # verify environment variables have valid values
-if ! [ "$MYSQL_UID" -eq "$MYSQL_UID" ]; then
+if [ "$(isInt "$MYSQL_UID")" -ge 0 ]; then
+    printf "Setting mysql UID to %s\n" "$MYSQL_UID"
+else
     printf "'%s' is not a valid value for MYSQL_UID\n" "$MYSQL_UID"
     exit 1
-else
-    printf "Setting mysql UID to %s\n" "$MYSQL_UID"
 fi
-if ! [ "$MYSQL_GID" -eq "$MYSQL_UID" ]; then
+if [ "$(isInt "$MYSQL_GID")" -ge 0 ]; then
+    printf "Setting mysql GID to %s\n" "$MYSQL_GID"
+else
     printf "'%s' is not a valid value for MYSQL_GID\n" "$MYSQL_UID"
     exit 1
-else
-    printf "Setting mysql GID to %s\n" "$MYSQL_GID"
-
 fi
 if [ "$MYSQL_SKIP_NAME_RESOLVE" != "TRUE" ] && [ "$MYSQL_SKIP_NAME_RESOLVE" != "FALSE" ]; then
     printf "MYSQL_SKIP_NAME_RESOLVE must be either 'TRUE' or 'FALSE'\n"