diff --git a/include/proto/proto_tcp.h b/include/proto/proto_tcp.h
index 0712764..4644452 100644
--- a/include/proto/proto_tcp.h
+++ b/include/proto/proto_tcp.h
@@ -64,7 +64,7 @@
  */
 static inline int tcp_trk_idx(int trk_action)
 {
-	return trk_action - TCP_ACT_TRK_SC1;
+	return trk_action - TCP_ACT_TRK_SC0;
 }
 
 #endif /* _PROTO_PROTO_TCP_H */
diff --git a/include/proto/session.h b/include/proto/session.h
index 5188639..cc1242d 100644
--- a/include/proto/session.h
+++ b/include/proto/session.h
@@ -87,7 +87,7 @@
 		if (!s->stkctr[i].entry)
 			continue;
 
-		if (!(s->flags & (SN_BE_TRACK_SC1 << i)))
+		if (!(s->flags & (SN_BE_TRACK_SC0 << i)))
 			continue;
 
 		ptr = stktable_data_ptr(s->stkctr[i].table, s->stkctr[i].entry, STKTABLE_DT_CONN_CUR);
@@ -173,7 +173,7 @@
 		if (!s->stkctr[i].entry)
 			continue;
 
-		if (!(s->flags & (SN_BE_TRACK_SC1 << i)))
+		if (!(s->flags & (SN_BE_TRACK_SC0 << i)))
 			continue;
 
 		ptr = stktable_data_ptr(s->stkctr[i].table, s->stkctr[i].entry, STKTABLE_DT_HTTP_REQ_CNT);
diff --git a/include/types/proto_tcp.h b/include/types/proto_tcp.h
index c9fd1e4..a820462 100644
--- a/include/types/proto_tcp.h
+++ b/include/types/proto_tcp.h
@@ -33,9 +33,9 @@
 	TCP_ACT_ACCEPT = 1,
 	TCP_ACT_REJECT = 2,
 	TCP_ACT_EXPECT_PX = 3,
-	TCP_ACT_TRK_SC1 = 4, /* TCP request tracking : must be contiguous */
-	TCP_ACT_TRK_SC2 = 5,
-	TCP_ACT_TRK_SC3 = 6,
+	TCP_ACT_TRK_SC0 = 4, /* TCP request tracking : must be contiguous */
+	TCP_ACT_TRK_SC1 = 5,
+	TCP_ACT_TRK_SC2 = 6,
 };
 
 struct tcp_rule {
diff --git a/include/types/session.h b/include/types/session.h
index efdcaa6..00ed4cb 100644
--- a/include/types/session.h
+++ b/include/types/session.h
@@ -91,9 +91,9 @@
 #define SN_COMP_READY   0x00100000	/* the compression is initialized */
 
 /* session tracking flags: these ones must absolutely be contiguous. See also s->stkctr */
-#define SN_BE_TRACK_SC1 0x00200000	/* backend tracks stick-counter 1 */
-#define SN_BE_TRACK_SC2 0x00400000	/* backend tracks stick-counter 2 */
-#define SN_BE_TRACK_SC3 0x00800000	/* backend tracks stick-counter 3 */
+#define SN_BE_TRACK_SC0 0x00200000	/* backend tracks stick-counter 0 */
+#define SN_BE_TRACK_SC1 0x00400000	/* backend tracks stick-counter 1 */
+#define SN_BE_TRACK_SC2 0x00800000	/* backend tracks stick-counter 2 */
 #define SN_BE_TRACK_ANY 0x00E00000      /* union of all SN_BE_TRACK_* above */