diff --git a/contrib/spoa_example/spoa.c b/contrib/spoa_example/spoa.c
index bf2dbe9a9..71a36f072 100644
--- a/contrib/spoa_example/spoa.c
+++ b/contrib/spoa_example/spoa.c
@@ -514,6 +514,7 @@ handle_hahello(struct spoe_frame *frame)
 
 	/* Retrieve flags */
 	memcpy((char *)&(frame->flags), p, 4);
+	frame->flags = ntohl(frame->flags);
 	p += 4;
 
 	/* Fragmentation is not supported for HELLO frame */
@@ -621,6 +622,7 @@ handle_hadiscon(struct spoe_frame *frame)
 
 	/* Retrieve flags */
 	memcpy((char *)&(frame->flags), p, 4);
+	frame->flags = ntohl(frame->flags);
 	p += 4;
 
 	/* Fragmentation is not supported for DISCONNECT frame */
@@ -702,6 +704,7 @@ handle_hanotify(struct spoe_frame *frame)
 
 	/* Retrieve flags */
 	memcpy((char *)&(frame->flags), p, 4);
+	frame->flags = ntohl(frame->flags);
 	p += 4;
 
 	/* Fragmentation is not supported */
@@ -764,6 +767,7 @@ handle_hafrag(struct spoe_frame *frame)
 
 	/* Retrieve flags */
 	memcpy((char *)&(frame->flags), p, 4);
+	frame->flags = ntohl(frame->flags);
 	p+= 4;
 
 	/* Read the stream-id and frame-id */
@@ -826,6 +830,7 @@ prepare_agenthello(struct spoe_frame *frame)
 	*p++ = SPOE_FRM_T_AGENT_HELLO;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -907,6 +912,7 @@ prepare_agentdicon(struct spoe_frame *frame)
 	*p++ = SPOE_FRM_T_AGENT_DISCON;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -954,6 +960,7 @@ prepare_agentack(struct spoe_frame *frame)
 	*p++ = SPOE_FRM_T_AGENT_ACK;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
diff --git a/doc/SPOE.txt b/doc/SPOE.txt
index 756988f68..c34102a67 100644
--- a/doc/SPOE.txt
+++ b/doc/SPOE.txt
@@ -694,7 +694,12 @@ actions.
     KV-NAME          : <STRING>
     KV-VALUE         : <TYPED-DATA>
 
-    FLAGS :   0   1      2-31
+    FLAGS :
+
+    Flags are a 32 bits field. They are encoded on 4 bytes in network byte
+    order, where the bit 0 is the LSB.
+
+              0   1      2-31
             +---+---+----------+
             |   | A |          |
             | F | B |          |
diff --git a/src/flt_spoe.c b/src/flt_spoe.c
index cc6c55e29..4e27c63b2 100644
--- a/src/flt_spoe.c
+++ b/src/flt_spoe.c
@@ -399,6 +399,7 @@ spoe_prepare_hahello_frame(struct appctx *appctx, char *frame, size_t size)
 	*p++ = SPOE_FRM_T_HAPROXY_HELLO;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -488,6 +489,7 @@ spoe_prepare_hadiscon_frame(struct appctx *appctx, char *frame, size_t size)
 	*p++ = SPOE_FRM_T_HAPROXY_DISCON;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -559,6 +561,7 @@ spoe_prepare_hanotify_frame(struct appctx *appctx, struct spoe_context *ctx,
 	*p++ = SPOE_FRM_T_HAPROXY_NOTIFY;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -615,6 +618,7 @@ spoe_prepare_hafrag_frame(struct appctx *appctx, struct spoe_context *ctx,
 	*p++ = SPOE_FRM_T_UNSET;
 
 	/* Set flags */
+	flags = htonl(flags);
 	memcpy(p, (char *)&flags, 4);
 	p += 4;
 
@@ -669,6 +673,7 @@ spoe_handle_agenthello_frame(struct appctx *appctx, char *frame, size_t size)
 
 	/* Retrieve flags */
 	memcpy((char *)&flags, p, 4);
+	flags = ntohl(flags);
 	p += 4;
 
 	/* Fragmentation is not supported for HELLO frame */
@@ -852,6 +857,7 @@ spoe_handle_agentdiscon_frame(struct appctx *appctx, char *frame, size_t size)
 
 	/* Retrieve flags */
 	memcpy((char *)&flags, p, 4);
+	flags = ntohl(flags);
 	p += 4;
 
 	/* Fragmentation is not supported for DISCONNECT frame */
@@ -962,6 +968,7 @@ spoe_handle_agentack_frame(struct appctx *appctx, struct spoe_context **ctx,
 
 	/* Retrieve flags */
 	memcpy((char *)&flags, p, 4);
+	flags = ntohl(flags);
 	p += 4;
 
 	/* Fragmentation is not supported for now */