diff --git a/lib/oversip/sip/uri.rb b/lib/oversip/sip/uri.rb
index 532e50c..7eb6929 100644
--- a/lib/oversip/sip/uri.rb
+++ b/lib/oversip/sip/uri.rb
@@ -98,6 +98,16 @@ def del_param k
       false
     end
 
+    def clean_params
+      return nil  if unknown_scheme?
+      return false  unless @params
+      @params.clear
+      @transport_param = nil
+      @phone_context_param = nil
+      @uri_modified = true
+      true
+    end
+
     def transport_param= value
       return nil  unless @scheme == :sip or @scheme == :sips
       if value
diff --git a/test/test_uri.rb b/test/test_uri.rb
index 1b8dd4d..42732d4 100644
--- a/test/test_uri.rb
+++ b/test/test_uri.rb
@@ -22,6 +22,11 @@ def test_sip_uri
     assert_equal "123", uri.get_param("Foo")
     assert_equal aor, uri.aor
     assert_equal full_uri, uri.to_s
+
+    uri.clean_params
+
+    assert_equal({}, uri.params)
+    assert_equal "sips:i%C3%B1aki@aliax.net:5060?X-Header-1=qwe&X-Header-2=asd", uri.to_s
   end
 
   def test_tel_uri
@@ -39,6 +44,11 @@ def test_tel_uri
     assert_equal "bar", uri.get_param("Foo")
     assert_equal aor, uri.aor
     assert_equal full_uri, uri.to_s
+
+    uri.clean_params
+
+    assert_equal({}, uri.params)
+    assert_equal aor, uri.to_s
   end
 
   def test_http_uri
@@ -53,5 +63,6 @@ def test_http_uri
     assert_true uri.unknown_scheme?
     assert_nil uri.aor
     assert_equal full_uri, uri.to_s
+    assert_nil uri.clean_params
   end
 end