diff --git a/subprojects/gstreamer/tests/check/gst/gstcontroller.c b/subprojects/gstreamer/tests/check/gst/gstcontroller.c
index 04a11e2c69..23eb9e0dd2 100644
--- a/subprojects/gstreamer/tests/check/gst/gstcontroller.c
+++ b/subprojects/gstreamer/tests/check/gst/gstcontroller.c
@@ -368,6 +368,8 @@ gst_test_control_binding_set_property (GObject * object,
 
   switch (property_id) {
     case PROP_CS:
+      if (self->cs)
+        gst_object_unref (self->cs);
       self->cs = g_value_dup_object (value);
       break;
     default: