diff --git a/src/validation/rules.ts b/src/validation/rules.ts
index d6d9821..814515f 100644
--- a/src/validation/rules.ts
+++ b/src/validation/rules.ts
@@ -225,7 +225,7 @@ export default {
      * Rule: checks if the value is only alpha numeric
      */
     number ({ value }: { value: any }): Promise<boolean> {
-        return Promise.resolve(!isNaN(Number(value)))
+        return Promise.resolve(String(value).length > 0 && !isNaN(Number(value)))
     },
 
     /**
diff --git a/src/validation/validator.ts b/src/validation/validator.ts
index 96e8281..c2eab3a 100644
--- a/src/validation/validator.ts
+++ b/src/validation/validator.ts
@@ -68,7 +68,7 @@ export function createValidatorGroups (rules: [ValidationRule, any[], string, st
             bail: true,
         })))
     } else {
-        groups.push(...rules.map(mapper))
+        groups.push(...enlarge(rules.map(mapper)))
     }
 
     return groups