diff --git a/phase/builder_test.go b/phase/builder_test.go
index 7de58da89..3a197cce5 100644
--- a/phase/builder_test.go
+++ b/phase/builder_test.go
@@ -200,7 +200,6 @@ func testBuilder(t *testing.T, when spec.G, it spec.S) {
 			executor.EXPECT().Build(*bpB, gomock.Any(), gomock.Any()).Do(
 				func(_ buildpack.BpDescriptor, inputs buildpack.BuildInputs, _ llog.Logger) (buildpack.BuildOutputs, error) {
 					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_ARCH=amd64")
-					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_ARCH_VARIANT=")
 					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_OS=linux")
 					return buildpack.BuildOutputs{}, nil
 				})
diff --git a/phase/detector_test.go b/phase/detector_test.go
index 1c0e3be05..ff429cd5e 100644
--- a/phase/detector_test.go
+++ b/phase/detector_test.go
@@ -221,7 +221,6 @@ func testDetector(t *testing.T, when spec.G, it spec.S) {
 			executor.EXPECT().Detect(bpA1, gomock.Any(), gomock.Any()).Do(
 				func(_ buildpack.Descriptor, inputs buildpack.DetectInputs, _ log.Logger) buildpack.DetectOutputs {
 					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_ARCH=amd64")
-					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_ARCH_VARIANT=")
 					h.AssertContains(t, inputs.TargetEnv, "CNB_TARGET_OS=linux")
 					return buildpack.DetectOutputs{}
 				})
diff --git a/phase/generator_test.go b/phase/generator_test.go
index aefc13e1f..df7ecb980 100644
--- a/phase/generator_test.go
+++ b/phase/generator_test.go
@@ -283,7 +283,6 @@ func testGenerator(t *testing.T, when spec.G, it spec.S) {
 						func(d buildpack.ExtDescriptor, inputs buildpack.GenerateInputs, _ *log.Logger) (buildpack.GenerateOutputs, error) {
 							h.AssertContains(t, inputs.TargetEnv,
 								"CNB_TARGET_ARCH=amd64",
-								"CNB_TARGET_ARCH_VARIANT=",
 								"CNB_TARGET_OS=linux",
 							)
 							return buildpack.GenerateOutputs{Dockerfiles: []buildpack.DockerfileInfo{{ExtensionID: d.Extension.ID,
@@ -293,7 +292,6 @@ func testGenerator(t *testing.T, when spec.G, it spec.S) {
 						func(d buildpack.ExtDescriptor, inputs buildpack.GenerateInputs, _ *log.Logger) (buildpack.GenerateOutputs, error) {
 							h.AssertContains(t, inputs.TargetEnv,
 								"CNB_TARGET_ARCH=amd64",
-								"CNB_TARGET_ARCH_VARIANT=",
 								"CNB_TARGET_OS=linux",
 							)
 							return buildpack.GenerateOutputs{Dockerfiles: []buildpack.DockerfileInfo{{ExtensionID: d.Extension.ID,