diff --git a/sloggers/slogtest/assert/assert.go b/sloggers/slogtest/assert/assert.go
index e246a2f..e11476f 100644
--- a/sloggers/slogtest/assert/assert.go
+++ b/sloggers/slogtest/assert/assert.go
@@ -50,6 +50,12 @@ func True(t testing.TB, name string, act bool) {
 	Equal(t, name, true, act)
 }
 
+// False asserts act == false.
+func False(t testing.TB, name string, act bool) {
+	slog.Helper()
+	Equal(t, name, false, act)
+}
+
 // Error asserts err != nil.
 func Error(t testing.TB, name string, err error) {
 	slog.Helper()
diff --git a/sloggers/slogtest/assert/assert_test.go b/sloggers/slogtest/assert/assert_test.go
index 82d9a5d..49f6c02 100644
--- a/sloggers/slogtest/assert/assert_test.go
+++ b/sloggers/slogtest/assert/assert_test.go
@@ -75,6 +75,19 @@ func TestTrue(t *testing.T) {
 	assert.True(tb, "meow", false)
 }
 
+func TestFalse(t *testing.T) {
+	t.Parallel()
+
+	tb := &fakeTB{}
+	assert.False(tb, "woof", false)
+
+	defer func() {
+		recover()
+		simpleassert.Equal(t, "fatals", 1, tb.fatals)
+	}()
+	assert.False(tb, "woof", true)
+}
+
 func TestError(t *testing.T) {
 	t.Parallel()