diff --git a/datapath/forward.c b/datapath/forward.c
index ffb6e5c..767981b 100644
--- a/datapath/forward.c
+++ b/datapath/forward.c
@@ -105,7 +105,7 @@ recv_set_config(struct sw_chain *chain, const struct sender *sender,
 	const struct ofp_switch_config *osc = msg;
 	int flags;
 
-	flags = ntohs(osc->flags) & (OFPC_SEND_FLOW_EXP | OFPC_FRAG_MASK);
+	flags = ntohs(osc->flags) & OFPC_FRAG_MASK;
 	if ((flags & OFPC_FRAG_MASK) != OFPC_FRAG_NORMAL
 	    && (flags & OFPC_FRAG_MASK) != OFPC_FRAG_DROP) {
 		flags = (flags & ~OFPC_FRAG_MASK) | OFPC_FRAG_DROP;
diff --git a/lib/learning-switch.c b/lib/learning-switch.c
index 3778823..051bfe9 100644
--- a/lib/learning-switch.c
+++ b/lib/learning-switch.c
@@ -347,7 +347,7 @@ send_features_request(struct lswitch *sw, struct rconn *rconn)
 
         /* Send OFPT_SET_CONFIG. */
         osc = make_openflow(sizeof *osc, OFPT_SET_CONFIG, &b);
-        osc->flags = htons(OFPC_SEND_FLOW_EXP);
+        osc->flags = 0;
         osc->miss_send_len = htons(OFP_DEFAULT_MISS_SEND_LEN);
         queue_tx(sw, rconn, b);
 
diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index 13f596f..4a6706e 100644
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -589,10 +589,6 @@ ofp_print_switch_config(struct ds *string, const void *oh, size_t len UNUSED,
     uint16_t flags;
 
     flags = ntohs(osc->flags);
-    if (flags & OFPC_SEND_FLOW_EXP) {
-        flags &= ~OFPC_SEND_FLOW_EXP;
-        ds_put_format(string, " (sending flow expirations)");
-    }
     if (flags) {
         ds_put_format(string, " ***unknown flags 0x%04"PRIx16"***", flags);
     }
diff --git a/secchan/flow-end.c b/secchan/flow-end.c
index cc2a505..5e34939 100644
--- a/secchan/flow-end.c
+++ b/secchan/flow-end.c
@@ -279,12 +279,6 @@ flow_end_remote_packet_cb(struct relay *r, void *flow_end_)
         return false;
     }
 
-    if (osc->flags & htons(OFPC_SEND_FLOW_EXP)) {
-        fe->send_ofp_exp = true;
-    } else {
-        fe->send_ofp_exp = false;
-    }
-
     send_nx_flow_end_config(fe);
 
     return false;
diff --git a/udatapath/datapath.c b/udatapath/datapath.c
index 93f3095..fdb643c 100644
--- a/udatapath/datapath.c
+++ b/udatapath/datapath.c
@@ -895,7 +895,7 @@ recv_set_config(struct datapath *dp, const struct sender *sender UNUSED,
     const struct ofp_switch_config *osc = msg;
     int flags;
 
-    flags = ntohs(osc->flags) & (OFPC_SEND_FLOW_EXP | OFPC_FRAG_MASK);
+    flags = ntohs(osc->flags) & OFPC_FRAG_MASK;
     if ((flags & OFPC_FRAG_MASK) != OFPC_FRAG_NORMAL
         && (flags & OFPC_FRAG_MASK) != OFPC_FRAG_DROP) {
         flags = (flags & ~OFPC_FRAG_MASK) | OFPC_FRAG_DROP;