@@ -33,10 +33,11 @@
 #import "OFLocalization.h"
 #import "OFDataArray.h"
 
 #import "OFInitializationFailedException.h"
 #import "OFInvalidArgumentException.h"
+#import "OFNotOpenException.h"
 #import "OFOpenItemFailedException.h"
 #import "OFOutOfRangeException.h"
 #import "OFReadFailedException.h"
 #import "OFSeekFailedException.h"
 #import "OFWriteFailedException.h"
@@ -307,23 +308,22 @@
 }
 
 - (bool)lowlevelIsAtEndOfStream
 {
 	if (!OF_FILE_HANDLE_IS_VALID(_handle))
-		return true;
+		@throw [OFNotOpenException exceptionWithObject: self];
 
 	return _atEndOfStream;
 }
 
 - (size_t)lowlevelReadIntoBuffer: (void *)buffer
 			  length: (size_t)length
 {
 	ssize_t ret;
 
-	if (!OF_FILE_HANDLE_IS_VALID(_handle) || _atEndOfStream)
-		@throw [OFReadFailedException exceptionWithObject: self
-						  requestedLength: length];
+	if (!OF_FILE_HANDLE_IS_VALID(_handle))
+		@throw [OFNotOpenException exceptionWithObject: self];
 
 #if defined(OF_WINDOWS)
 	if (length > UINT_MAX)
 		@throw [OFOutOfRangeException exception];
 
@@ -352,13 +352,12 @@
 }
 
 - (void)lowlevelWriteBuffer: (const void *)buffer
 		     length: (size_t)length
 {
-	if (!OF_FILE_HANDLE_IS_VALID(_handle) || _atEndOfStream)
-		@throw [OFWriteFailedException exceptionWithObject: self
-						   requestedLength: length];
+	if (!OF_FILE_HANDLE_IS_VALID(_handle))
+		@throw [OFNotOpenException exceptionWithObject: self];
 
 #if defined(OF_WINDOWS)
 	if (length > INT_MAX)
 		@throw [OFOutOfRangeException exception];
 
@@ -395,13 +394,11 @@
 			     whence: (int)whence
 {
 	of_offset_t ret;
 
 	if (!OF_FILE_HANDLE_IS_VALID(_handle))
-		@throw [OFSeekFailedException exceptionWithStream: self
-							   offset: offset
-							   whence: whence];
+		@throw [OFNotOpenException exceptionWithObject: self];
 
 #ifndef OF_MORPHOS
 # if defined(OF_WINDOWS)
 	ret = _lseeki64(_handle, offset, whence);
 # elif defined(OF_HAVE_OFF64_T)