diff --git a/file.inc b/file.inc
index 8909735..8786f3d 100644
--- a/file.inc
+++ b/file.inc
@@ -311,18 +311,6 @@ native bool:fcopy(const source[], const target[]);
  */
 native filecrc(const filename[]);
 
-/**
- * <library>file</library>
- * <summary>Returns the free disk space.</summary>
- * <param name="volume">The name of the volume on systems that support multiple disks or multiple memory cards.  On single-volume systems, it
- * is optional.</param>
- * <remarks>
- * The maximum size that can be supported 2048 GiB (2 terabyte).
- * </remarks>
- * <returns>The amount of free space in KiB.</returns>
- */
-forward diskfree(const volume[] = "");
-
 /**
  * <library>file</library>
  * <summary>Set the file attributes.</summary>