diff --git a/src/app/Providers/PaymentProvider.php b/src/app/Providers/PaymentProvider.php
--- a/src/app/Providers/PaymentProvider.php
+++ b/src/app/Providers/PaymentProvider.php
@@ -303,7 +303,7 @@
         }
         $methods = self::applyMethodWhitelist($type, $methods);
 
-        \Log::debug("Loaded payment methods" . var_export($methods, true));
+        \Log::debug("Loaded payment methods " . var_export($methods, true));
 
         Cache::put($cacheKey, $methods, now()->addHours(1));
 
diff --git a/src/app/Wallet.php b/src/app/Wallet.php
--- a/src/app/Wallet.php
+++ b/src/app/Wallet.php
@@ -725,6 +725,10 @@
             $amount = abs($amount) * -1;
         }
 
+        // Another process might have modified the balance since the object was created, refresh it.
+        // Note: We're not using $this->increment('balance', $amount) because that will not pass
+        // a proper balance value to the 'updated' event observer.
+        $this->balance = self::find($this->id)->balance;
         $this->balance += $amount;
         $this->save();
 
diff --git a/src/tests/Feature/WalletTest.php b/src/tests/Feature/WalletTest.php
--- a/src/tests/Feature/WalletTest.php
+++ b/src/tests/Feature/WalletTest.php
@@ -599,7 +599,34 @@
      */
     public function testAwardAndPenalty(): void
     {
-        $this->markTestIncomplete();
+        $user = $this->getTestUser('UserWallet1@UserWallet.com');
+        $wallet = $user->wallets()->first();
+
+        // Test award
+        // Set the balance to a different value than the one in the database
+        // The tested methods should use value from the database
+        $wallet->balance = -100;
+
+        $this->assertSame($wallet->id, $wallet->award(100, 'test')->id);
+        $this->assertSame(100, $wallet->balance);
+        $this->assertSame(100, $wallet->fresh()->balance);
+        $transaction = $wallet->transactions()->first();
+        $this->assertSame(100, $transaction->amount);
+        $this->assertSame(Transaction::WALLET_AWARD, $transaction->type);
+        $this->assertSame('test', $transaction->description);
+
+        $wallet->transactions()->delete();
+
+        // Test penalty
+        $this->assertSame($wallet->id, $wallet->penalty(100, 'test')->id);
+        $this->assertSame(0, $wallet->balance);
+        $this->assertSame(0, $wallet->fresh()->balance);
+        $transaction = $wallet->transactions()->first();
+        $this->assertSame(-100, $transaction->amount);
+        $this->assertSame(Transaction::WALLET_PENALTY, $transaction->type);
+        $this->assertSame('test', $transaction->description);
+
+        // TODO: Test input of type Payment
     }
 
     /**