diff --git a/internal/hcp/registry/types.bucket.go b/internal/hcp/registry/types.bucket.go
index 597128dac..869398a24 100644
--- a/internal/hcp/registry/types.bucket.go
+++ b/internal/hcp/registry/types.bucket.go
@@ -64,23 +64,23 @@ func (b *Bucket) Validate() error {
 }
 
 // ReadFromHCLBuildBlock reads the information for initialising a Bucket from a HCL2 build block
-func (b *Bucket) ReadFromHCLBuildBlock(hcpBlock *hcl2template.BuildBlock) {
+func (b *Bucket) ReadFromHCLBuildBlock(build *hcl2template.BuildBlock) {
 	if b == nil {
 		return
 	}
-	b.Description = hcpBlock.Description
 
-	hcp := hcpBlock.HCPPackerRegistry
-	if hcp == nil {
+	registryBlock := build.HCPPackerRegistry
+	if registryBlock == nil {
 		return
 	}
 
-	b.BucketLabels = hcp.BucketLabels
-	b.BuildLabels = hcp.BuildLabels
+	b.Description = registryBlock.Description
+	b.BucketLabels = registryBlock.BucketLabels
+	b.BuildLabels = registryBlock.BuildLabels
 	// If there's already a Slug this was set from env variable.
 	// In Packer, env variable overrides config values so we keep it that way for consistency.
-	if b.Slug == "" && hcp.Slug != "" {
-		b.Slug = hcp.Slug
+	if b.Slug == "" && registryBlock.Slug != "" {
+		b.Slug = registryBlock.Slug
 	}
 }
 
diff --git a/internal/hcp/registry/types.bucket_test.go b/internal/hcp/registry/types.bucket_test.go
index 922916b46..d4cb7b1ac 100644
--- a/internal/hcp/registry/types.bucket_test.go
+++ b/internal/hcp/registry/types.bucket_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
+	"github.com/hashicorp/packer/hcl2template"
 	"github.com/hashicorp/packer/internal/hcp/api"
 )
 
@@ -333,3 +334,51 @@ func TestBucket_PopulateIteration(t *testing.T) {
 		})
 	}
 }
+
+func TestReadFromHCLBuildBlock(t *testing.T) {
+	tc := []struct {
+		desc           string
+		buildBlock     *hcl2template.BuildBlock
+		expectedBucket *Bucket
+	}{
+		{
+			desc: "configure bucket using only hcp_packer_registry block",
+			buildBlock: &hcl2template.BuildBlock{
+				HCPPackerRegistry: &hcl2template.HCPPackerRegistryBlock{
+					Slug:        "hcp_packer_registry-block-test",
+					Description: "description from hcp_packer_registry block",
+					BucketLabels: map[string]string{
+						"org": "test",
+					},
+					BuildLabels: map[string]string{
+						"version":   "1.7.0",
+						"based_off": "alpine",
+					},
+				},
+			},
+			expectedBucket: &Bucket{
+				Slug:        "hcp_packer_registry-block-test",
+				Description: "description from hcp_packer_registry block",
+				BucketLabels: map[string]string{
+					"org": "test",
+				},
+				BuildLabels: map[string]string{
+					"version":   "1.7.0",
+					"based_off": "alpine",
+				},
+			},
+		},
+	}
+	for _, tt := range tc {
+		tt := tt
+		t.Run(tt.desc, func(t *testing.T) {
+			bucket := &Bucket{}
+			bucket.ReadFromHCLBuildBlock(tt.buildBlock)
+
+			diff := cmp.Diff(bucket, tt.expectedBucket, cmp.AllowUnexported(Bucket{}))
+			if diff != "" {
+				t.Errorf("expected the build to to have contents of hcp_packer_registry block but it does not: %v", diff)
+			}
+		})
+	}
+}