diff --git a/staging/src/k8s.io/apimachinery/pkg/labels/selector.go b/staging/src/k8s.io/apimachinery/pkg/labels/selector.go
index 067bcac0a0d..e83cdae0e1e 100644
--- a/staging/src/k8s.io/apimachinery/pkg/labels/selector.go
+++ b/staging/src/k8s.io/apimachinery/pkg/labels/selector.go
@@ -848,7 +848,6 @@ func (p *Parser) parseIdentifiersList() (sets.String, error) {
 				return s, nil
 			}
 			if tok2 == CommaToken {
-				p.consume(Values)
 				s.Insert("") // to handle ,, Double "" removed by StringSet
 			}
 		default: // it can be operator
diff --git a/staging/src/k8s.io/apimachinery/pkg/labels/selector_test.go b/staging/src/k8s.io/apimachinery/pkg/labels/selector_test.go
index 91dfd51d56c..abe066154d1 100644
--- a/staging/src/k8s.io/apimachinery/pkg/labels/selector_test.go
+++ b/staging/src/k8s.io/apimachinery/pkg/labels/selector_test.go
@@ -636,9 +636,24 @@ func TestSetSelectorParser(t *testing.T) {
 		{"x in (abc,)", internalSelector{
 			getRequirement("x", selection.In, sets.NewString("abc", ""), t),
 		}, true, true},
+		{"x in (abc,abc)", internalSelector{
+			getRequirement("x", selection.In, sets.NewString("abc"), t),
+		}, true, true},
 		{"x in ()", internalSelector{
 			getRequirement("x", selection.In, sets.NewString(""), t),
 		}, true, true},
+		{"x in (a,,)", internalSelector{
+			getRequirement("x", selection.In, sets.NewString("a", ""), t),
+		}, true, true},
+		{"x in (a,,,)", internalSelector{
+			getRequirement("x", selection.In, sets.NewString("a", ""), t),
+		}, true, true},
+		{"x in (a,,,,,,)", internalSelector{
+			getRequirement("x", selection.In, sets.NewString("a", ""), t),
+		}, true, true},
+		{"x in (a,,a,,a,,a,,)", internalSelector{
+			getRequirement("x", selection.In, sets.NewString("a", ""), t),
+		}, true, true},
 		{"x notin (abc,,def),bar,z in (),w", internalSelector{
 			getRequirement("bar", selection.Exists, nil, t),
 			getRequirement("w", selection.Exists, nil, t),