@@ -246,11 +246,11 @@
 #ifdef OF_HAVE_THREADS
 static of_spinlock_t emergencyExceptionsSpinlock;
 
 OF_CONSTRUCTOR()
 {
-	if (!of_spinlock_new(&emergencyExceptionsSpinlock))
+	if (of_spinlock_new(&emergencyExceptionsSpinlock) != 0)
 		OBJC_ERROR("Cannot create spinlock!");
 }
 #endif
 
 static uint64_t
@@ -705,18 +705,18 @@
 static void
 emergencyExceptionCleanup(_Unwind_Reason_Code reason,
     struct _Unwind_Exception *ex)
 {
 #ifdef OF_HAVE_THREADS
-	if (!of_spinlock_lock(&emergencyExceptionsSpinlock))
+	if (of_spinlock_lock(&emergencyExceptionsSpinlock) != 0)
 		OBJC_ERROR("Cannot lock spinlock!");
 #endif
 
 	ex->class = 0;
 
 #ifdef OF_HAVE_THREADS
-	if (!of_spinlock_unlock(&emergencyExceptionsSpinlock))
+	if (of_spinlock_unlock(&emergencyExceptionsSpinlock) != 0)
 		OBJC_ERROR("Cannot unlock spinlock!");
 #endif
 }
 
 void
@@ -725,11 +725,11 @@
 	struct objc_exception *e = calloc(1, sizeof(*e));
 	bool emergency = false;
 
 	if (e == NULL) {
 #ifdef OF_HAVE_THREADS
-		if (!of_spinlock_lock(&emergencyExceptionsSpinlock))
+		if (of_spinlock_lock(&emergencyExceptionsSpinlock) != 0)
 			OBJC_ERROR("Cannot lock spinlock!");
 #endif
 
 		for (uint_fast8_t i = 0; i < NUM_EMERGENCY_EXCEPTIONS; i++) {
 			if (emergencyExceptions[i].exception.class == 0) {
@@ -740,11 +740,11 @@
 				break;
 			}
 		}
 
 #ifdef OF_HAVE_THREADS
-		if (!of_spinlock_unlock(&emergencyExceptionsSpinlock))
+		if (of_spinlock_unlock(&emergencyExceptionsSpinlock) != 0)
 			OBJC_ERROR("Cannot lock spinlock!");
 #endif
 	}
 
 	if (e == NULL)