diff --git a/magefile.go b/magefile.go
index bce44e72..7372cb89 100644
--- a/magefile.go
+++ b/magefile.go
@@ -253,6 +253,14 @@ func UpdateTestfiles() {
 func TestIntegration() {
 	mg.Deps(UseTestEnvironment, CleanTestdata, EnsureGinkgo, EnsureDeployed)
 
+	// TODO: we need to run these tests either isolated against EnvTest, or
+	// against a cluster that doesn't have the operator deployed. Otherwise
+	// both the controller running in the test, and the controller on the cluster
+	// are responding to the same events.
+	// For now, it's up to the caller to use a fresh cluster with CRDs installed until we can fix it.
+
+	kubectl("delete", "deployment", "porter-operator-controller-manager", "-n=porter-operator-system").RunV()
+
 	v := ""
 	if mg.Verbose() {
 		v = "-v"