diff --git a/circuit_breaker.go b/circuit_breaker.go
index 8b25251b..b6b42122 100644
--- a/circuit_breaker.go
+++ b/circuit_breaker.go
@@ -31,7 +31,7 @@ type CircuitBreaker struct {
 	state            atomic.Value // circuitBreakerState
 	failureCount     atomic.Uint32
 	successCount     atomic.Uint32
-	lastFailureAt    time.Time
+	lastFailureAt    atomic.Value // time.Time
 }
 
 // NewCircuitBreaker method creates a new [CircuitBreaker] with default settings.
@@ -117,10 +117,6 @@ func (cb *CircuitBreaker) getState() circuitBreakerState {
 }
 
 func (cb *CircuitBreaker) allow() error {
-	if cb == nil {
-		return nil
-	}
-
 	if cb.getState() == circuitBreakerStateOpen {
 		return ErrCircuitBreakerOpen
 	}
@@ -129,10 +125,6 @@ func (cb *CircuitBreaker) allow() error {
 }
 
 func (cb *CircuitBreaker) applyPolicies(resp *http.Response) {
-	if cb == nil {
-		return
-	}
-
 	failed := false
 	for _, policy := range cb.policies {
 		if policy(resp) {
@@ -142,7 +134,7 @@ func (cb *CircuitBreaker) applyPolicies(resp *http.Response) {
 	}
 
 	if failed {
-		if cb.failureCount.Load() > 0 && time.Since(cb.lastFailureAt) > cb.timeout {
+		if cb.failureCount.Load() > 0 && time.Since(cb.lastFailureAt.Load().(time.Time)) > cb.timeout {
 			cb.failureCount.Store(0)
 		}
 
@@ -152,7 +144,7 @@ func (cb *CircuitBreaker) applyPolicies(resp *http.Response) {
 			if failCount >= cb.failureThreshold {
 				cb.open()
 			} else {
-				cb.lastFailureAt = time.Now()
+				cb.lastFailureAt.Store(time.Now())
 			}
 		case circuitBreakerStateHalfOpen:
 			cb.open()
diff --git a/client.go b/client.go
index ec6141f8..656252ef 100644
--- a/client.go
+++ b/client.go
@@ -2240,8 +2240,10 @@ func (c *Client) executeRequestMiddlewares(req *Request) (err error) {
 // Executes method executes the given `Request` object and returns
 // response or error.
 func (c *Client) execute(req *Request) (*Response, error) {
-	if err := c.circuitBreaker.allow(); err != nil {
-		return nil, err
+	if c.circuitBreaker != nil {
+		if err := c.circuitBreaker.allow(); err != nil {
+			return nil, err
+		}
 	}
 
 	if err := c.executeRequestMiddlewares(req); err != nil {
@@ -2268,7 +2270,9 @@ func (c *Client) execute(req *Request) (*Response, error) {
 		}
 	}
 	if resp != nil {
-		c.circuitBreaker.applyPolicies(resp)
+		if c.circuitBreaker != nil {
+			c.circuitBreaker.applyPolicies(resp)
+		}
 
 		response.Body = resp.Body
 		if err = response.wrapContentDecompresser(); err != nil {