diff --git a/phalcon/http/request.zep b/phalcon/http/request.zep
index 554b8dc47ba..2b6448ff100 100755
--- a/phalcon/http/request.zep
+++ b/phalcon/http/request.zep
@@ -260,7 +260,7 @@ class Request implements RequestInterface, InjectionAwareInterface
 	/**
 	 * Gets HTTP header from request data
 	 */
-	public final function getHeader(string! header) -> string
+	public final function getHeader(string! header) -> string | null
 	{
 		var value, name;
 
@@ -274,7 +274,7 @@ class Request implements RequestInterface, InjectionAwareInterface
 			return value;
 		}
 
-		return "";
+		return null;
 	}
 
 	/**