diff --git a/reactos/sdk/include/ddk/ata.h b/reactos/sdk/include/ddk/ata.h
index 218d45d8cb4..fe6809f19eb 100644
--- a/reactos/sdk/include/ddk/ata.h
+++ b/reactos/sdk/include/ddk/ata.h
@@ -252,4 +252,6 @@ typedef struct _IDENTIFY_DEVICE_DATA {
 } IDENTIFY_DEVICE_DATA, *PIDENTIFY_DEVICE_DATA;
 #include <poppack.h>
 
+#define IDE_COMMAND_IDENTIFY 0xEC
+
 #endif