diff --git a/php/ByteBuffer.php b/php/ByteBuffer.php
index 4a583b7a5..cd6af76aa 100644
--- a/php/ByteBuffer.php
+++ b/php/ByteBuffer.php
@@ -239,7 +239,9 @@ class ByteBuffer
      */
     public function putInt($offset, $value)
     {
-        self::validateValue(~PHP_INT_MAX,  PHP_INT_MAX, $value, "int");
+        // 2147483647 = (1 << 31) -1 = Maximum signed 32-bit int
+        // -2147483648 = -1 << 31 = Minimum signed 32-bit int
+        self::validateValue(-2147483648, 2147483647, $value, "int");
 
         $this->assertOffsetAndLength($offset, 4);
         $this->writeLittleEndian($offset, 4, $value);
@@ -252,7 +254,8 @@ class ByteBuffer
     public function putUint($offset, $value)
     {
         // NOTE: We can't put big integer value. this is PHP limitation.
-        self::validateValue(0,  PHP_INT_MAX, $value, "uint",  " php has big numbers limitation. check your PHP_INT_MAX");
+        // 4294967295 = (1 << 32) -1 = Maximum unsigned 32-bin int
+        self::validateValue(0, 4294967295, $value, "uint",  " php has big numbers limitation. check your PHP_INT_MAX");
 
         $this->assertOffsetAndLength($offset, 4);
         $this->writeLittleEndian($offset, 4, $value);
diff --git a/tests/phpTest.php b/tests/phpTest.php
index bace87dbb..c942ef121 100644
--- a/tests/phpTest.php
+++ b/tests/phpTest.php
@@ -192,7 +192,7 @@ function fuzzTest1(Assert $assert)
     $uchar_val = 0xFF;
     $short_val = -32222; // 0x8222;
     $ushort_val = 0xFEEE;
-    $int_val = 0x83333333 | 0;
+    $int_val = 0x7fffffff | 0;
     // for now
     $uint_val = 1;
     $long_val = 2;