diff --git a/include/dos_inc.h b/include/dos_inc.h
index 343147de..f89e4cf8 100644
--- a/include/dos_inc.h
+++ b/include/dos_inc.h
@@ -154,6 +154,7 @@ bool DOS_FCBDeleteFile(Bit16u seg,Bit16u offset);
 bool DOS_FCBRenameFile(Bit16u seg, Bit16u offset);
 void DOS_FCBSetRandomRecord(Bit16u seg, Bit16u offset);
 Bit8u FCB_Parsename(Bit16u seg,Bit16u offset,Bit8u parser ,char *string, Bit8u *change);
+bool DOS_GetAllocationInfo(Bit8u drive,Bit16u * _bytes_sector,Bit16u * _sectors_cluster,Bit16u * _total_clusters);
 
 /* Extra DOS Interrupts */
 void DOS_SetupMisc(void);