diff --git a/src/decode-udp.c b/src/decode-udp.c
index 6d34250d22..9f96def3cd 100644
--- a/src/decode-udp.c
+++ b/src/decode-udp.c
@@ -103,7 +103,7 @@ int DecodeUDP(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p,
     }
 
     /* Handle VXLAN if configured */
-    if (DecodeVXLANEnabledForPort(p->sp, p->dp) &&
+    if (DecodeVXLANEnabledForPort(p->dp) &&
             unlikely(DecodeVXLAN(tv, dtv, p, p->payload, p->payload_len) == TM_ECODE_OK)) {
         /* Here we have a VXLAN packet and don't need to handle app
          * layer */
diff --git a/src/decode-vxlan.c b/src/decode-vxlan.c
index 92433a0fcd..4b6984821d 100644
--- a/src/decode-vxlan.c
+++ b/src/decode-vxlan.c
@@ -59,17 +59,17 @@ typedef struct VXLANHeader_ {
     uint8_t res;
 } VXLANHeader;
 
-bool DecodeVXLANEnabledForPort(const uint16_t sp, const uint16_t dp)
+bool DecodeVXLANEnabledForPort(const uint16_t dp)
 {
-    SCLogDebug("ports %u->%u ports %d %d %d %d", sp, dp, g_vxlan_ports[0], g_vxlan_ports[1],
-            g_vxlan_ports[2], g_vxlan_ports[3]);
+    SCLogDebug("checking dest port %u against ports %d %d %d %d", dp, g_vxlan_ports[0],
+            g_vxlan_ports[1], g_vxlan_ports[2], g_vxlan_ports[3]);
 
     if (g_vxlan_enabled) {
         for (int i = 0; i < g_vxlan_ports_idx; i++) {
             if (g_vxlan_ports[i] == VXLAN_UNSET_PORT)
                 return false;
-            const int port = g_vxlan_ports[i];
-            if (port == (const int)sp || port == (const int)dp)
+            /* RFC 7348: VXLAN identification is based on destination port only */
+            if (g_vxlan_ports[i] == (const int)dp)
                 return true;
         }
     }
diff --git a/src/decode-vxlan.h b/src/decode-vxlan.h
index f80ebd001a..65328be852 100644
--- a/src/decode-vxlan.h
+++ b/src/decode-vxlan.h
@@ -28,6 +28,6 @@
 
 void DecodeVXLANRegisterTests(void);
 void DecodeVXLANConfig(void);
-bool DecodeVXLANEnabledForPort(const uint16_t sp, const uint16_t dp);
+bool DecodeVXLANEnabledForPort(const uint16_t dp);
 
 #endif /* !SURICATA_DECODE_VXLAN_H */