diff --git a/php_uv.c b/php_uv.c
index 61e8c74..54be177 100644
--- a/php_uv.c
+++ b/php_uv.c
@@ -3095,6 +3095,10 @@ PHP_FUNCTION(ares_gethostbyname)
 	}
 
 	ZEND_FETCH_RESOURCE(uv, php_uv_ares_t *, &handle, -1, PHP_UV_ARES_RESOURCE_NAME, uv_ares_handle);
+	if (uv->gethostbyname_cb != NULL) {
+		zval_ptr_dtor(&uv->gethostbyname_cb);
+		uv->gethostbyname_cb = NULL;
+	}
 	Z_ADDREF_P(byname_cb);
 	uv->gethostbyname_cb = byname_cb;
 	
diff --git a/tests/200-ares_gethostbyname.phpt b/tests/200-ares_gethostbyname.phpt
new file mode 100644
index 0000000..cf00a5d
--- /dev/null
+++ b/tests/200-ares_gethostbyname.phpt
@@ -0,0 +1,35 @@
+--TEST--
+Check for ares_gethostbyname
+--FILE--
+<?php
+$uv = uv_ares_init_options(uv_default_loop(), array(
+    "servers" => array(
+        "8.8.8.8"
+    ),
+    "port"=>53
+),null);
+
+ares_gethostbyname($uv,"php.net",AF_INET, function($name, $addr){
+    echo $name . PHP_EOL;
+    if (is_array($addr)) {
+        echo "OK";
+    }  else {
+        echo "FAILED";
+    }
+});
+
+ares_gethostbyname($uv,"php.net",AF_INET, function($name, $addr){
+    echo $name . PHP_EOL;
+    if (is_array($addr)) {
+        echo "OK" . PHP_EOL;
+    }  else {
+        echo "FAILED: 2nd parameter does not array" . PHP_EOL;
+    }
+});
+
+uv_run();
+--EXPECT--
+php.net
+OK
+php.net
+OK
\ No newline at end of file