diff --git a/.changelog/7479.txt b/.changelog/7479.txt
new file mode 100644
index 00000000000..8ec013c0699
--- /dev/null
+++ b/.changelog/7479.txt
@@ -0,0 +1,3 @@
+```release-note:none
+
+```
diff --git a/google/resource_eventarc_google_channel_config_test.go b/google/resource_eventarc_google_channel_config_test.go
index 29494d9072c..acf2a88eb6e 100644
--- a/google/resource_eventarc_google_channel_config_test.go
+++ b/google/resource_eventarc_google_channel_config_test.go
@@ -75,6 +75,9 @@ func TestAccEventarcGoogleChannelConfig_cryptoKeyUpdate(t *testing.T) {
 				ImportState:       true,
 				ImportStateVerify: true,
 			},
+			{
+				Config: testAccEventarcGoogleChannelConfig_deleteCryptoKey(context),
+			},
 		},
 	})
 }
@@ -152,6 +155,16 @@ resource "google_eventarc_google_channel_config" "primary" {
 	`, context)
 }
 
+func testAccEventarcGoogleChannelConfig_deleteCryptoKey(context map[string]interface{}) string {
+	return Nprintf(`
+resource "google_eventarc_google_channel_config" "primary" {
+	location = "%{region}"
+	name     = "projects/%{project_name}/locations/%{region}/googleChannelConfig"
+	crypto_key_name = ""
+}
+	`, context)
+}
+
 func testAccCheckEventarcGoogleChannelConfigDestroyProducer(t *testing.T) func(s *terraform.State) error {
 	return func(s *terraform.State) error {
 		for name, rs := range s.RootModule().Resources {