diff --git a/pkg/apis/apiserverinternal/validation/validation.go b/pkg/apis/apiserverinternal/validation/validation.go
index 928ffec7bb0..3b82baf690f 100644
--- a/pkg/apis/apiserverinternal/validation/validation.go
+++ b/pkg/apis/apiserverinternal/validation/validation.go
@@ -160,7 +160,7 @@ func validateStorageVersionCondition(conditions []apiserverinternal.StorageVersi
 }
 
 const dns1035LabelFmt string = "[a-z]([-a-z0-9]*[a-z0-9])?"
-const dns1035LabelErrMsg string = "a DNS-1035 label must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character"
+const dns1035LabelErrMsg string = "a DNS-1035 label, which must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character"
 
 // isValidAPIVersion tests whether the value passed is a valid apiVersion. A
 // valid apiVersion contains a version string that matches DNS_LABEL format,
@@ -178,19 +178,19 @@ func isValidAPIVersion(apiVersion string) []string {
 		var group string
 		group, version = parts[0], parts[1]
 		if len(group) == 0 {
-			errs = append(errs, "group part "+utilvalidation.EmptyError())
+			errs = append(errs, "group part: "+utilvalidation.EmptyError())
 		} else if msgs := utilvalidation.IsDNS1123Subdomain(group); len(msgs) != 0 {
-			errs = append(errs, prefixEach(msgs, "group part ")...)
+			errs = append(errs, prefixEach(msgs, "group part: ")...)
 		}
 	default:
-		return append(errs, "an apiVersion "+utilvalidation.RegexError(dns1035LabelErrMsg, dns1035LabelFmt, "my-name", "abc-123")+
+		return append(errs, "an apiVersion is "+utilvalidation.RegexError(dns1035LabelErrMsg, dns1035LabelFmt, "my-name", "abc-123")+
 			" with an optional DNS subdomain prefix and '/' (e.g. 'example.com/MyVersion')")
 	}
 
 	if len(version) == 0 {
-		errs = append(errs, "version part "+utilvalidation.EmptyError())
+		errs = append(errs, "version part: "+utilvalidation.EmptyError())
 	} else if msgs := utilvalidation.IsDNS1035Label(version); len(msgs) != 0 {
-		errs = append(errs, prefixEach(msgs, "version part ")...)
+		errs = append(errs, prefixEach(msgs, "version part: ")...)
 	}
 	return errs
 }
diff --git a/pkg/apis/apiserverinternal/validation/validation_test.go b/pkg/apis/apiserverinternal/validation/validation_test.go
index fcaded290ee..0d0b3bae893 100644
--- a/pkg/apis/apiserverinternal/validation/validation_test.go
+++ b/pkg/apis/apiserverinternal/validation/validation_test.go
@@ -75,7 +75,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "mygroup.com/v2",
 				DecodableVersions: []string{"mygroup.com/v2", "/v3"},
 			},
-			expectedErr: `[].decodableVersions[1]: Invalid value: "/v3": group part must be non-empty`,
+			expectedErr: `[].decodableVersions[1]: Invalid value: "/v3": group part: must be non-empty`,
 		},
 		{
 			ssv: apiserverinternal.ServerStorageVersion{
@@ -83,7 +83,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "mygroup.com/v2",
 				DecodableVersions: []string{"mygroup.com/v2", "mygroup.com/"},
 			},
-			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/": version part must be non-empty`,
+			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/": version part: must be non-empty`,
 		},
 		{
 			ssv: apiserverinternal.ServerStorageVersion{
@@ -91,7 +91,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "/v3",
 				DecodableVersions: []string{"mygroup.com/v2", "/v3"},
 			},
-			expectedErr: `[].encodingVersion: Invalid value: "/v3": group part must be non-empty`,
+			expectedErr: `[].encodingVersion: Invalid value: "/v3": group part: must be non-empty`,
 		},
 		{
 			ssv: apiserverinternal.ServerStorageVersion{
@@ -99,7 +99,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "v1",
 				DecodableVersions: []string{"v1", "mygroup_com/v2"},
 			},
-			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup_com/v2": group part a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')`,
+			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup_com/v2": group part: a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')`,
 		},
 		{
 			ssv: apiserverinternal.ServerStorageVersion{
@@ -107,7 +107,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "v1",
 				DecodableVersions: []string{"v1", "mygroup.com/v2_"},
 			},
-			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/v2_": version part a DNS-1035 label must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character (e.g. 'my-name',  or 'abc-123', regex used for validation is '[a-z]([-a-z0-9]*[a-z0-9])?')`,
+			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/v2_": version part: a DNS-1035 label must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character (e.g. 'my-name',  or 'abc-123', regex used for validation is '[a-z]([-a-z0-9]*[a-z0-9])?')`,
 		},
 		{
 			ssv: apiserverinternal.ServerStorageVersion{
@@ -115,7 +115,7 @@ func TestValidateServerStorageVersion(t *testing.T) {
 				EncodingVersion:   "v1",
 				DecodableVersions: []string{"v1", "mygroup.com/v2/myresource"},
 			},
-			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/v2/myresource": an apiVersion a DNS-1035 label must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character (e.g. 'my-name',  or 'abc-123', regex used for validation is '[a-z]([-a-z0-9]*[a-z0-9])?') with an optional DNS subdomain prefix and '/' (e.g. 'example.com/MyVersion')`,
+			expectedErr: `[].decodableVersions[1]: Invalid value: "mygroup.com/v2/myresource": an apiVersion is a DNS-1035 label, which must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character (e.g. 'my-name',  or 'abc-123', regex used for validation is '[a-z]([-a-z0-9]*[a-z0-9])?') with an optional DNS subdomain prefix and '/' (e.g. 'example.com/MyVersion')`,
 		},
 	}