diff --git a/src/libimcv/tcg/swid/tcg_swid_attr_req.c b/src/libimcv/tcg/swid/tcg_swid_attr_req.c
index c403d06f9..51e39008b 100644
--- a/src/libimcv/tcg/swid/tcg_swid_attr_req.c
+++ b/src/libimcv/tcg/swid/tcg_swid_attr_req.c
@@ -32,7 +32,7 @@ typedef struct private_tcg_swid_attr_req_t private_tcg_swid_attr_req_t;
  *                       1                   2                   3
  *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- *  |Reserved |C|S|R|                   Tag ID Count                |
+ *  |R|S|C| Reserved|                   Tag ID Count                |
  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  *  |                          Request ID                           |
  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@@ -44,7 +44,7 @@ typedef struct private_tcg_swid_attr_req_t private_tcg_swid_attr_req_t;
  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  */
 
-#define SWID_REQ_RESERVED_MASK			0x03
+#define SWID_REQ_RESERVED_MASK			0xE0
 
 /**
  * Private data of an tcg_swid_attr_req_t object.
diff --git a/src/libimcv/tcg/swid/tcg_swid_attr_req.h b/src/libimcv/tcg/swid/tcg_swid_attr_req.h
index 59b597d84..9655c3c58 100644
--- a/src/libimcv/tcg/swid/tcg_swid_attr_req.h
+++ b/src/libimcv/tcg/swid/tcg_swid_attr_req.h
@@ -28,9 +28,9 @@ typedef enum tcg_swid_attr_req_flag_t tcg_swid_attr_req_flag_t;
 
 enum tcg_swid_attr_req_flag_t {
 	TCG_SWID_ATTR_REQ_FLAG_NONE = 0,
-	TCG_SWID_ATTR_REQ_FLAG_R =   (1 << 0),
-	TCG_SWID_ATTR_REQ_FLAG_S =   (1 << 1),
-	TCG_SWID_ATTR_REQ_FLAG_C =   (1 << 2)
+	TCG_SWID_ATTR_REQ_FLAG_R =   (1 << 7),
+	TCG_SWID_ATTR_REQ_FLAG_S =   (1 << 6),
+	TCG_SWID_ATTR_REQ_FLAG_C =   (1 << 5)
 };
 
 #include "tcg/tcg_attr.h"