diff --git a/database/migrations/2019_03_01_000000_create_rules_table.php b/database/migrations/2019_03_01_000000_create_rules_table.php
index ebda4d1..e455235 100644
--- a/database/migrations/2019_03_01_000000_create_rules_table.php
+++ b/database/migrations/2019_03_01_000000_create_rules_table.php
@@ -13,7 +13,7 @@ class CreateRulesTable extends Migration
         $connection = config('lauthz.basic.database.connection') ?: config('database.default');
         Schema::connection($connection)->create(config('lauthz.basic.database.rules_table'), function (Blueprint $table) {
             $table->increments('id');
-            $table->string('p_type')->nullable();
+            $table->string('ptype')->nullable();
             $table->string('v0')->nullable();
             $table->string('v1')->nullable();
             $table->string('v2')->nullable();
diff --git a/src/Adapters/DatabaseAdapter.php b/src/Adapters/DatabaseAdapter.php
index aeea972..63c5a9e 100755
--- a/src/Adapters/DatabaseAdapter.php
+++ b/src/Adapters/DatabaseAdapter.php
@@ -55,7 +55,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
      */
     public function savePolicyLine(string $ptype, array $rule): void
     {
-        $col['p_type'] = $ptype;
+        $col['ptype'] = $ptype;
         foreach ($rule as $key => $value) {
             $col['v'.strval($key)] = $value;
         }
@@ -127,7 +127,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
         $i = 0;
 
         foreach($rules as $rule) {
-            $temp['p_type'] = $ptype;
+            $temp['ptype'] = $ptype;
             $temp['created_at'] = new DateTime();
             $temp['updated_at'] = $temp['created_at'];
             foreach ($rule as $key => $value) {
@@ -149,7 +149,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
      */
     public function removePolicy(string $sec, string $ptype, array $rule): void
     {
-        $instance = $this->eloquent->where('p_type', $ptype);
+        $instance = $this->eloquent->where('ptype', $ptype);
 
         foreach ($rule as $key => $value) {
             $instance->where('v'.strval($key), $value);
@@ -187,7 +187,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
      */
     public function removeFilteredPolicy(string $sec, string $ptype, int $fieldIndex, string ...$fieldValues): void
     {
-        $instance = $this->eloquent->where('p_type', $ptype);
+        $instance = $this->eloquent->where('ptype', $ptype);
         
         foreach (range(0, 5) as $value) {
             if ($fieldIndex <= $value && $value < $fieldIndex + count($fieldValues)) {
@@ -212,7 +212,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
      */
     public function updatePolicy(string $sec, string $ptype, array $oldRule, array $newPolicy): void
     {
-        $instance = $this->eloquent->where('p_type', $ptype);
+        $instance = $this->eloquent->where('ptype', $ptype);
         foreach($oldRule as $k => $v) {
             $instance->where('v' . $k, $v);
         }
@@ -255,7 +255,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
      */
     public function updateFilteredPolicies(string $sec, string $ptype, array $newPolicies, int $fieldIndex, string ...$fieldValues): array
     {
-        $where['p_type'] = $ptype;
+        $where['ptype'] = $ptype;
         foreach ($fieldValues as $fieldValue) {
             if (!is_null($fieldValue) && $fieldValue !== '') {
                 $where['v'. $fieldIndex++] = $fieldValue;
@@ -265,7 +265,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
         $newP = [];
         $oldP = [];
         foreach ($newPolicies as $newRule) {
-            $col['p_type'] = $ptype;
+            $col['ptype'] = $ptype;
             $col['created_at'] = new DateTime();
             $col['updated_at'] = $col['created_at'];
             foreach ($newRule as $key => $value) {
@@ -282,7 +282,7 @@ class DatabaseAdapter implements DatabaseAdapterContract, BatchDatabaseAdapterCo
                 $item = array_filter($item, function ($value) {
                     return !is_null($value) && $value !== '';
                 });
-                unset($item['p_type']);
+                unset($item['ptype']);
             }
             
             $oldRules->delete();
diff --git a/src/Models/Rule.php b/src/Models/Rule.php
index 9550e1e..9259a40 100755
--- a/src/Models/Rule.php
+++ b/src/Models/Rule.php
@@ -29,7 +29,7 @@ class Rule extends Model
      *
      * @var array
      */
-    protected $fillable = ['p_type', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5'];
+    protected $fillable = ['ptype', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5'];
 
     /**
      * Create a new Eloquent model instance.
@@ -62,7 +62,7 @@ class Rule extends Model
     public function getAllFromCache()
     {
         $get = function () {
-            return $this->select('p_type', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5')->get()->toArray();
+            return $this->select('ptype', 'v0', 'v1', 'v2', 'v3', 'v4', 'v5')->get()->toArray();
         };
         if (!$this->config('cache.enabled', false)) {
             return $get();
diff --git a/tests/RequestMiddlewareTest.php b/tests/RequestMiddlewareTest.php
index c7dfb0e..b4e6088 100644
--- a/tests/RequestMiddlewareTest.php
+++ b/tests/RequestMiddlewareTest.php
@@ -68,11 +68,11 @@ EOT;
     {
         Rule::truncate();
 
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo', 'v2' => 'GET']);
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'GET']);
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo', 'v2' => 'POST']);
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'PUT']);
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'DELETE']);
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => '/foo1/*', 'v2' => '(GET)|(POST)']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo', 'v2' => 'GET']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'GET']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo', 'v2' => 'POST']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'PUT']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo/:id', 'v2' => 'DELETE']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => '/foo1/*', 'v2' => '(GET)|(POST)']);
     }
 }
diff --git a/tests/RuleCacheTest.php b/tests/RuleCacheTest.php
index 8a78277..701bc57 100644
--- a/tests/RuleCacheTest.php
+++ b/tests/RuleCacheTest.php
@@ -28,7 +28,7 @@ class RuleCacheTest extends TestCase
         app(Rule::class)->getAllFromCache();
         $this->assertCount(0, DB::getQueryLog());
 
-        $rule = Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
+        $rule = Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
         app(Rule::class)->getAllFromCache();
         $this->assertCount(2, DB::getQueryLog());
 
@@ -48,7 +48,7 @@ class RuleCacheTest extends TestCase
         app(Rule::class)->getAllFromCache();
         $this->assertCount(1, DB::getQueryLog());
 
-        $rule = Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
+        $rule = Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
         app(Rule::class)->getAllFromCache();
         $this->assertCount(3, DB::getQueryLog());
 
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 7771487..262aac2 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -53,12 +53,12 @@ abstract class TestCase extends BaseTestCase
     {
         Rule::truncate();
 
-        Rule::create(['p_type' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
-        Rule::create(['p_type' => 'p', 'v0' => 'bob', 'v1' => 'data2', 'v2' => 'write']);
+        Rule::create(['ptype' => 'p', 'v0' => 'alice', 'v1' => 'data1', 'v2' => 'read']);
+        Rule::create(['ptype' => 'p', 'v0' => 'bob', 'v1' => 'data2', 'v2' => 'write']);
 
-        Rule::create(['p_type' => 'p', 'v0' => 'data2_admin', 'v1' => 'data2', 'v2' => 'read']);
-        Rule::create(['p_type' => 'p', 'v0' => 'data2_admin', 'v1' => 'data2', 'v2' => 'write']);
-        Rule::create(['p_type' => 'g', 'v0' => 'alice', 'v1' => 'data2_admin']);
+        Rule::create(['ptype' => 'p', 'v0' => 'data2_admin', 'v1' => 'data2', 'v2' => 'read']);
+        Rule::create(['ptype' => 'p', 'v0' => 'data2_admin', 'v1' => 'data2', 'v2' => 'write']);
+        Rule::create(['ptype' => 'g', 'v0' => 'alice', 'v1' => 'data2_admin']);
     }
 
     protected function runMiddleware($middleware, $request, ...$args)