diff --git a/examples/exampleBase.php b/examples/exampleBase.php
index 9f335f1..ca18e2c 100644
--- a/examples/exampleBase.php
+++ b/examples/exampleBase.php
@@ -4,4 +4,4 @@ require('../vendor/autoload.php');
 
 use Web3\Web3;
 
-$web3 = new Web3('http://192.168.99.100:8545');
\ No newline at end of file
+$web3 = new Web3('http://192.168.99.100:8545/');
\ No newline at end of file
diff --git a/src/Formatters/BooleanFormatter.php b/src/Formatters/BooleanFormatter.php
index f6cd328..1107cf0 100644
--- a/src/Formatters/BooleanFormatter.php
+++ b/src/Formatters/BooleanFormatter.php
@@ -21,13 +21,10 @@ class BooleanFormatter implements IFormatter
      * format
      * 
      * @param mixed $value
-     * @return int
+     * @return bool
      */
     public static function format($value)
     {
-        if (!is_bool($value)) {
-            throw new InvalidArgumentException('The value to inputFormat function must be boolean.');
-        }
-        return (int) $value;
+        return (bool) $value;
     }
 }
\ No newline at end of file
diff --git a/test/unit/BooleanFormatterTest.php b/test/unit/BooleanFormatterTest.php
index b0da5b4..24c7d4a 100644
--- a/test/unit/BooleanFormatterTest.php
+++ b/test/unit/BooleanFormatterTest.php
@@ -36,12 +36,15 @@ class BooleanFormatterTest extends TestCase
         $formatter = $this->formatter;
 
         $boolean = $formatter->format(true);
-        $this->assertEquals($boolean, 1);
+        $this->assertEquals($boolean, true);
+
+        $boolean = $formatter->format(1);
+        $this->assertEquals($boolean, true);
 
         $boolean = $formatter->format(false);
-        $this->assertEquals($boolean, 0);
+        $this->assertEquals($boolean, false);
 
-        $this->expectException(InvalidArgumentException::class);
-        $boolean = $formatter->format('boolean');
+        $boolean = $formatter->format(0);
+        $this->assertEquals($boolean, false);
     }
 }
\ No newline at end of file