diff --git a/pkg/apis/nfd/v1alpha1/expression.go b/pkg/apis/nfd/v1alpha1/expression.go
index 1fd6c2b92..9a0507498 100644
--- a/pkg/apis/nfd/v1alpha1/expression.go
+++ b/pkg/apis/nfd/v1alpha1/expression.go
@@ -41,55 +41,6 @@ var matchOps = map[MatchOp]struct{}{
 	MatchIsFalse:      {},
 }
 
-// Validate validates the expression.
-func (m *MatchExpression) Validate() error {
-	if _, ok := matchOps[m.Op]; !ok {
-		return fmt.Errorf("invalid Op %q", m.Op)
-	}
-	switch m.Op {
-	case MatchExists, MatchDoesNotExist, MatchIsTrue, MatchIsFalse, MatchAny:
-		if len(m.Value) != 0 {
-			return fmt.Errorf("value must be empty for Op %q (have %v)", m.Op, m.Value)
-		}
-	case MatchGt, MatchLt:
-		if len(m.Value) != 1 {
-			return fmt.Errorf("value must contain exactly one element for Op %q (have %v)", m.Op, m.Value)
-		}
-		if _, err := strconv.Atoi(m.Value[0]); err != nil {
-			return fmt.Errorf("value must be an integer for Op %q (have %v)", m.Op, m.Value[0])
-		}
-	case MatchGtLt:
-		if len(m.Value) != 2 {
-			return fmt.Errorf("value must contain exactly two elements for Op %q (have %v)", m.Op, m.Value)
-		}
-		var err error
-		v := make([]int, 2)
-		for i := 0; i < 2; i++ {
-			if v[i], err = strconv.Atoi(m.Value[i]); err != nil {
-				return fmt.Errorf("value must contain integers for Op %q (have %v)", m.Op, m.Value)
-			}
-		}
-		if v[0] >= v[1] {
-			return fmt.Errorf("value[0] must be less than Value[1] for Op %q (have %v)", m.Op, m.Value)
-		}
-	case MatchInRegexp:
-		if len(m.Value) == 0 {
-			return fmt.Errorf("value must be non-empty for Op %q", m.Op)
-		}
-		for _, v := range m.Value {
-			_, err := regexp.Compile(v)
-			if err != nil {
-				return fmt.Errorf("value must only contain valid regexps for Op %q (have %v)", m.Op, m.Value)
-			}
-		}
-	default:
-		if len(m.Value) == 0 {
-			return fmt.Errorf("value must be non-empty for Op %q", m.Op)
-		}
-	}
-	return nil
-}
-
 // Match evaluates the MatchExpression against a single input value.
 func (m *MatchExpression) Match(valid bool, value interface{}) (bool, error) {
 	if _, ok := matchOps[m.Op]; !ok {
diff --git a/pkg/apis/nfd/v1alpha1/expression_test.go b/pkg/apis/nfd/v1alpha1/expression_test.go
index e255387e8..150f45415 100644
--- a/pkg/apis/nfd/v1alpha1/expression_test.go
+++ b/pkg/apis/nfd/v1alpha1/expression_test.go
@@ -29,73 +29,6 @@ type BoolAssertionFunc func(assert.TestingT, bool, ...interface{}) bool
 
 type ValueAssertionFunc func(assert.TestingT, interface{}, ...interface{}) bool
 
-func TestMatchExpressionValidate(t *testing.T) {
-	type V = api.MatchValue
-	type TC struct {
-		name   string
-		op     api.MatchOp
-		values V
-		err    ValueAssertionFunc
-	}
-
-	tcs := []TC{
-		{name: "1", op: api.MatchAny, err: assert.Nil}, // #0
-		{name: "2", op: api.MatchAny, values: V{"1"}, err: assert.NotNil},
-
-		{name: "3", op: api.MatchIn, err: assert.NotNil},
-		{name: "4", op: api.MatchIn, values: V{"1"}, err: assert.Nil},
-		{name: "5", op: api.MatchIn, values: V{"1", "2", "3", "4"}, err: assert.Nil},
-
-		{name: "6", op: api.MatchNotIn, err: assert.NotNil},
-		{name: "7", op: api.MatchNotIn, values: V{"1"}, err: assert.Nil},
-		{name: "8", op: api.MatchNotIn, values: V{"1", "2"}, err: assert.Nil},
-
-		{name: "9", op: api.MatchInRegexp, err: assert.NotNil},
-		{name: "10", op: api.MatchInRegexp, values: V{"1"}, err: assert.Nil},
-		{name: "11", op: api.MatchInRegexp, values: V{"()", "2", "3"}, err: assert.Nil},
-		{name: "12", op: api.MatchInRegexp, values: V{"("}, err: assert.NotNil},
-
-		{name: "13", op: api.MatchExists, err: assert.Nil},
-		{name: "14", op: api.MatchExists, values: V{"1"}, err: assert.NotNil},
-
-		{name: "15", op: api.MatchDoesNotExist, err: assert.Nil},
-		{name: "16", op: api.MatchDoesNotExist, values: V{"1"}, err: assert.NotNil},
-
-		{name: "17", op: api.MatchGt, err: assert.NotNil},
-		{name: "18", op: api.MatchGt, values: V{"1"}, err: assert.Nil},
-		{name: "19", op: api.MatchGt, values: V{"-10"}, err: assert.Nil},
-		{name: "20", op: api.MatchGt, values: V{"1", "2"}, err: assert.NotNil},
-		{name: "21", op: api.MatchGt, values: V{""}, err: assert.NotNil},
-
-		{name: "22", op: api.MatchLt, err: assert.NotNil},
-		{name: "23", op: api.MatchLt, values: V{"1"}, err: assert.Nil},
-		{name: "24", op: api.MatchLt, values: V{"-1"}, err: assert.Nil},
-		{name: "25", op: api.MatchLt, values: V{"1", "2", "3"}, err: assert.NotNil},
-		{name: "26", op: api.MatchLt, values: V{"a"}, err: assert.NotNil},
-
-		{name: "27", op: api.MatchGtLt, err: assert.NotNil},
-		{name: "28", op: api.MatchGtLt, values: V{"1"}, err: assert.NotNil},
-		{name: "29", op: api.MatchGtLt, values: V{"1", "2"}, err: assert.Nil},
-		{name: "30", op: api.MatchGtLt, values: V{"2", "1"}, err: assert.NotNil},
-		{name: "31", op: api.MatchGtLt, values: V{"1", "2", "3"}, err: assert.NotNil},
-		{name: "32", op: api.MatchGtLt, values: V{"a", "2"}, err: assert.NotNil},
-
-		{name: "33", op: api.MatchIsTrue, err: assert.Nil},
-		{name: "34", op: api.MatchIsTrue, values: V{"1"}, err: assert.NotNil},
-
-		{name: "35", op: api.MatchIsFalse, err: assert.Nil},
-		{name: "36", op: api.MatchIsFalse, values: V{"1", "2"}, err: assert.NotNil},
-	}
-
-	for _, tc := range tcs {
-		t.Run(tc.name, func(t *testing.T) {
-			me := api.MatchExpression{Op: tc.op, Value: tc.values}
-			err := me.Validate()
-			tc.err(t, err)
-		})
-	}
-}
-
 func TestMatch(t *testing.T) {
 	type V = api.MatchValue
 	type TC struct {