diff --git a/.changelog/4414.txt b/.changelog/4414.txt
new file mode 100644
index 0000000000..ddee351811
--- /dev/null
+++ b/.changelog/4414.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/cloudflare_ruleset: unexpected validation error when ttl default is set with variable 
+```
diff --git a/internal/framework/service/rulesets/validators.go b/internal/framework/service/rulesets/validators.go
index f18ced0fd7..acdec50e77 100644
--- a/internal/framework/service/rulesets/validators.go
+++ b/internal/framework/service/rulesets/validators.go
@@ -62,6 +62,9 @@ func (v EdgeTTLValidator) ValidateObject(ctx context.Context, req validator.Obje
 	if resp.Diagnostics.HasError() {
 		return
 	}
+	if parameter.Default.IsUnknown() {
+		return
+	}
 
 	if parameter.Mode.ValueString() == "override_origin" {
 		if parameter.Default.ValueInt64() <= 0 {
@@ -105,6 +108,9 @@ func (v BrowserTTLValidator) ValidateObject(ctx context.Context, req validator.O
 	if resp.Diagnostics.HasError() {
 		return
 	}
+	if parameter.Default.IsUnknown() {
+		return
+	}
 
 	if parameter.Mode.ValueString() == "override_origin" {
 		if parameter.Default.ValueInt64() <= 0 {
diff --git a/internal/framework/service/rulesets/validators_test.go b/internal/framework/service/rulesets/validators_test.go
index 38b2e68204..e7d1f33338 100644
--- a/internal/framework/service/rulesets/validators_test.go
+++ b/internal/framework/service/rulesets/validators_test.go
@@ -61,6 +61,30 @@ func TestEdgeTTLValidation(t *testing.T) {
 				}
 			})
 
+			t.Run("passes when ttl is unknown", func(t *testing.T) {
+				t.Parallel()
+
+				mode := "override_origin"
+				_, statusCodeAttr, listType := constructStatusTTLObject()
+				resp := &validator.ObjectResponse{}
+				req := validator.ObjectRequest{
+					Path: path.Root("edge_ttl"),
+					ConfigValue: types.ObjectValueMust(
+						map[string]attr.Type{"mode": types.StringType, "status_code_ttl": listType, "default": types.Int64Type},
+						map[string]attr.Value{"mode": types.StringValue(mode), "status_code_ttl": statusCodeAttr, "default": types.Int64Unknown()},
+					),
+				}
+				edgeValidator.ValidateObject(ctx, req, resp)
+
+				expected := &validator.ObjectResponse{
+					Diagnostics: nil,
+				}
+
+				if diff := cmp.Diff(resp, expected); diff != "" {
+					t.Errorf("unexpected difference: %s", diff)
+				}
+			})
+
 			t.Run("passes valid ttl values", func(t *testing.T) {
 				t.Parallel()
 
@@ -162,6 +186,29 @@ func TestBrowserTTLValidation(t *testing.T) {
 				}
 			})
 
+			t.Run("passes when ttl is unknown", func(t *testing.T) {
+				t.Parallel()
+
+				mode := "override_origin"
+				resp := &validator.ObjectResponse{}
+				req := validator.ObjectRequest{
+					Path: path.Root("brower_ttl"),
+					ConfigValue: types.ObjectValueMust(
+						map[string]attr.Type{"mode": types.StringType, "default": types.Int64Type},
+						map[string]attr.Value{"mode": types.StringValue(mode), "default": types.Int64Unknown()},
+					),
+				}
+				browserValidator.ValidateObject(ctx, req, resp)
+
+				expected := &validator.ObjectResponse{
+					Diagnostics: nil,
+				}
+
+				if diff := cmp.Diff(resp, expected); diff != "" {
+					t.Errorf("unexpected difference: %s", diff)
+				}
+			})
+
 			t.Run("errors when invalid ttl is passed", func(t *testing.T) {
 				t.Parallel()