diff --git a/include/types/proto_http.h b/include/types/proto_http.h
index 645306165..50d12d6de 100644
--- a/include/types/proto_http.h
+++ b/include/types/proto_http.h
@@ -204,12 +204,12 @@ typedef enum {
  *                             which marks the end of the line (LF or CRLF).
  */
 struct http_msg {
-	int msg_state;                  /* where we are in the current message parsing */
+	unsigned int msg_state;         /* where we are in the current message parsing */
 	char *sol;                      /* start of line, also start of message when fully parsed */
 	char *eol;                      /* end of line */
-	int som;			/* Start Of Message, relative to buffer */
-	int col, sov;			/* current header: colon, start of value */
-	int eoh;			/* End Of Headers, relative to buffer */
+	unsigned int som;		/* Start Of Message, relative to buffer */
+	unsigned int col, sov;		/* current header: colon, start of value */
+	unsigned int eoh;		/* End Of Headers, relative to buffer */
 	char **cap;			/* array of captured headers (may be NULL) */
 	union {				/* useful start line pointers, relative to buffer */
 		struct {
diff --git a/src/proto_http.c b/src/proto_http.c
index 429f57142..6ee1c587a 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -937,9 +937,9 @@ void capture_headers(char *som, struct hdr_idx *idx,
  * within its state machine and use the same macros, hence the need for same
  * labels and variable names. Note that msg->sol is left unchanged.
  */
-const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
-			       const char *ptr, const char *end,
-			       char **ret_ptr, int *ret_state)
+const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
+			       unsigned int state, const char *ptr, const char *end,
+			       char **ret_ptr, unsigned int *ret_state)
 {
 	__label__
 		http_msg_rpver,
@@ -1060,9 +1060,9 @@ const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int st
  * within its state machine and use the same macros, hence the need for same
  * labels and variable names. Note that msg->sol is left unchanged.
  */
-const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
-			       const char *ptr, const char *end,
-			       char **ret_ptr, int *ret_state)
+const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
+			       unsigned int state, const char *ptr, const char *end,
+			       char **ret_ptr, unsigned int *ret_state)
 {
 	__label__
 		http_msg_rqmeth,
@@ -1206,7 +1206,7 @@ void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx
 		http_msg_ood,     /* out of data */
 		http_msg_invalid;
 
-	int state;                /* updated only when leaving the FSM */
+	unsigned int state;       /* updated only when leaving the FSM */
 	register char *ptr, *end; /* request pointers, to avoid dereferences */
 
 	state = msg->msg_state;