diff --git a/staging/src/k8s.io/cli-runtime/pkg/resource/builder.go b/staging/src/k8s.io/cli-runtime/pkg/resource/builder.go
index 00bd3701a0e..37e830852c9 100644
--- a/staging/src/k8s.io/cli-runtime/pkg/resource/builder.go
+++ b/staging/src/k8s.io/cli-runtime/pkg/resource/builder.go
@@ -129,6 +129,10 @@ Example resource specifications include:
 
 var StdinMultiUseError = errors.New("standard input cannot be used for multiple arguments")
 
+// ErrMultipleResourceTypes is returned when Builder.SingleResourceType() was called,
+// but multiple resource types were specified.
+var ErrMultipleResourceTypes = errors.New("you may only specify a single resource type")
+
 // TODO: expand this to include other errors.
 func IsUsageError(err error) bool {
 	if err == nil {
@@ -813,7 +817,7 @@ func (b *Builder) mappingFor(resourceOrKindArg string) (*meta.RESTMapping, error
 
 func (b *Builder) resourceMappings() ([]*meta.RESTMapping, error) {
 	if len(b.resources) > 1 && b.singleResourceType {
-		return nil, fmt.Errorf("you may only specify a single resource type")
+		return nil, ErrMultipleResourceTypes
 	}
 	mappings := []*meta.RESTMapping{}
 	seen := map[schema.GroupVersionKind]bool{}
@@ -849,7 +853,7 @@ func (b *Builder) resourceTupleMappings() (map[string]*meta.RESTMapping, error)
 		canonical[mapping.Resource] = struct{}{}
 	}
 	if len(canonical) > 1 && b.singleResourceType {
-		return nil, fmt.Errorf("you may only specify a single resource type")
+		return nil, ErrMultipleResourceTypes
 	}
 	return mappings, nil
 }
diff --git a/staging/src/k8s.io/cli-runtime/pkg/resource/builder_test.go b/staging/src/k8s.io/cli-runtime/pkg/resource/builder_test.go
index 41149b43feb..e556e462da5 100644
--- a/staging/src/k8s.io/cli-runtime/pkg/resource/builder_test.go
+++ b/staging/src/k8s.io/cli-runtime/pkg/resource/builder_test.go
@@ -1367,8 +1367,8 @@ func TestSingleResourceType(t *testing.T) {
 		SingleResourceType().
 		ResourceTypeOrNameArgs(true, "pods,services")
 
-	if b.Do().Err() == nil {
-		t.Errorf("unexpected non-error")
+	if err := b.Do().Err(); !errors.Is(err, ErrMultipleResourceTypes) {
+		t.Errorf("unexpected error: %s", err)
 	}
 }
 
diff --git a/staging/src/k8s.io/kubectl/pkg/cmd/get/get.go b/staging/src/k8s.io/kubectl/pkg/cmd/get/get.go
index 5509158a774..00b991e6edf 100644
--- a/staging/src/k8s.io/kubectl/pkg/cmd/get/get.go
+++ b/staging/src/k8s.io/kubectl/pkg/cmd/get/get.go
@@ -629,9 +629,6 @@ func (o *GetOptions) watch(f cmdutil.Factory, args []string) error {
 		}
 		return err
 	}
-	if multipleGVKsRequested(infos) {
-		return i18n.Errorf("watch is only supported on individual resources and resource collections - more than 1 resource was found")
-	}
 
 	info := infos[0]
 	mapping := info.ResourceMapping()