diff --git a/dbus/set.go b/dbus/set.go
index e36aaa03..88378b29 100644
--- a/dbus/set.go
+++ b/dbus/set.go
@@ -8,6 +8,10 @@ func (s *set) Add(value string) {
 	s.data[value] = true
 }
 
+func (s *set) Remove(value string) {
+	delete(s.data, value)
+}
+
 func (s *set) Contains(value string) (exists bool) {
 	_, exists = s.data[value]
 	return
diff --git a/dbus/set_test.go b/dbus/set_test.go
new file mode 100644
index 00000000..0cd3b3e6
--- /dev/null
+++ b/dbus/set_test.go
@@ -0,0 +1,26 @@
+package dbus
+
+import (
+	"testing"
+)
+
+// TestBasicSetActions asserts that Add & Remove behavior is correct
+func TestBasicSetActions(t *testing.T) {
+	s := set{}
+
+	if s.Contains("foo") {
+		t.Fatal("set should not contain 'foo'")
+	}
+
+	s.Add("foo")
+
+	if !s.Contains("foo") {
+		t.Fatal("set should contain 'foo'")
+	}
+
+	s.Remove("foo")
+
+	if s.Contains("foo") {
+		t.Fatal("set should not contain 'foo'")
+	}
+}