diff --git a/exfat/libexfat/io.c b/exfat/libexfat/io.c
index 3c3bd27..60aabb5 100644
--- a/exfat/libexfat/io.c
+++ b/exfat/libexfat/io.c
@@ -298,7 +298,7 @@
 	/* XXX SEEK_CUR will be handled incorrectly */
 	return dev->pos = lseek(dev->fd, offset, whence);
 #else
-	return lseek(dev->fd, offset, whence);
+	return lseek64(dev->fd, offset, whence);
 #endif
 }
 
@@ -332,7 +332,7 @@
 #ifdef USE_UBLIO
 	return ublio_pread(dev->ufh, buffer, size, offset);
 #else
-	return pread(dev->fd, buffer, size, offset);
+	return pread64(dev->fd, buffer, size, offset);
 #endif
 }
 
@@ -342,7 +342,7 @@
 #ifdef USE_UBLIO
 	return ublio_pwrite(dev->ufh, buffer, size, offset);
 #else
-	return pwrite(dev->fd, buffer, size, offset);
+	return pwrite64(dev->fd, buffer, size, offset);
 #endif
 }