Index: src/exceptions/OFLockFailedException.h
==================================================================
--- src/exceptions/OFLockFailedException.h
+++ src/exceptions/OFLockFailedException.h
@@ -48,21 +48,17 @@
  * @return A new, autoreleased lock failed exception
  */
 + (instancetype)exceptionWithLock: (nullable id <OFLocking>)lock
 			    errNo: (int)errNo;
 
-+ (instancetype)exception OF_UNAVAILABLE;
-
 /**
  * @brief Initializes an already allocated lock failed exception.
  *
  * @param lock The lock which could not be locked
  * @param errNo The errno of the error that occurred
  * @return An initialized lock failed exception
  */
 - (instancetype)initWithLock: (nullable id <OFLocking>)lock
 		       errNo: (int)errNo OF_DESIGNATED_INITIALIZER;
-
-- (instancetype)init OF_UNAVAILABLE;
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/exceptions/OFLockFailedException.m
==================================================================
--- src/exceptions/OFLockFailedException.m
+++ src/exceptions/OFLockFailedException.m
@@ -26,15 +26,10 @@
 + (instancetype)exceptionWithLock: (id <OFLocking>)lock errNo: (int)errNo
 {
 	return [[[self alloc] initWithLock: lock errNo: errNo] autorelease];
 }
 
-+ (instancetype)exception
-{
-	OF_UNRECOGNIZED_SELECTOR
-}
-
 - (instancetype)initWithLock: (id <OFLocking>)lock errNo: (int)errNo
 {
 	self = [super init];
 
 	_lock = [lock retain];
@@ -41,24 +36,22 @@
 	_errNo = errNo;
 
 	return self;
 }
 
-- (instancetype)init
-{
-	OF_INVALID_INIT_METHOD
-}
-
 - (void)dealloc
 {
 	[_lock release];
 
 	[super dealloc];
 }
 
 - (OFString *)description
 {
-	return [OFString stringWithFormat:
-	    @"A lock of type %@ could not be locked: %s",
-	    [_lock class], strerror(_errNo)];
+	if (_lock != nil)
+		return [OFString stringWithFormat:
+		    @"A lock of type %@ could not be locked: %s",
+		    [_lock class], strerror(_errNo)];
+	else
+		return @"A lock could not be locked!";
 }
 @end

Index: src/exceptions/OFUnlockFailedException.h
==================================================================
--- src/exceptions/OFUnlockFailedException.h
+++ src/exceptions/OFUnlockFailedException.h
@@ -57,10 +57,8 @@
  * @param errNo The errno of the error that occurred
  * @return An initialized unlock failed exception
  */
 - (instancetype)initWithLock: (nullable id <OFLocking>)lock
 		       errNo: (int)errNo OF_DESIGNATED_INITIALIZER;
-
-- (instancetype)init OF_UNAVAILABLE;
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/exceptions/OFUnlockFailedException.m
==================================================================
--- src/exceptions/OFUnlockFailedException.m
+++ src/exceptions/OFUnlockFailedException.m
@@ -36,24 +36,22 @@
 	_errNo = errNo;
 
 	return self;
 }
 
-- (instancetype)init
-{
-	OF_INVALID_INIT_METHOD
-}
-
 - (void)dealloc
 {
 	[_lock release];
 
 	[super dealloc];
 }
 
 - (OFString *)description
 {
-	return [OFString stringWithFormat:
-	    @"A lock of type %@ could not be unlocked: %s",
-	    [_lock class], strerror(_errNo)];
+	if (_lock != nil)
+		return [OFString stringWithFormat:
+		    @"A lock of type %@ could not be unlocked: %s",
+		    [_lock class], strerror(_errNo)];
+	else
+		return @"A lock could not be unlocked!";
 }
 @end