@@ -695,21 +695,21 @@
 {
 	if (lseek(fd, offset, SEEK_SET) == -1)
 		@throw [OFSeekFailedException newWithClass: isa];
 }
 
-- (size_t)_seekForwardWithOffset: (off_t)offset
+- (off_t)_seekForwardWithOffset: (off_t)offset
 {
 	off_t ret;
 
 	if ((ret = lseek(fd, offset, SEEK_CUR)) == -1)
 		@throw [OFSeekFailedException newWithClass: isa];
 
 	return ret;
 }
 
-- (size_t)_seekToOffsetRelativeToEnd: (off_t)offset
+- (off_t)_seekToOffsetRelativeToEnd: (off_t)offset
 {
 	off_t ret;
 
 	if ((ret = lseek(fd, offset, SEEK_END)) == -1)
 		@throw [OFSeekFailedException newWithClass: isa];
@@ -771,6 +771,24 @@
 {
 	@throw [OFNotImplementedException newWithClass: isa
 					      selector: _cmd];
 	[super dealloc];	/* Get rid of stupid warning */
 }
+
+- (void)_seekToOffset: (off_t)offset
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- (off_t)_seekForwardWithOffset: (off_t)offset
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
+
+- (off_t)_seekToOffsetRelativeToEnd: (off_t)offset
+{
+	@throw [OFNotImplementedException newWithClass: isa
+					      selector: _cmd];
+}
 @end