diff --git a/src/alert-unified2-alert.c b/src/alert-unified2-alert.c
index 6ee07478ac..f131b3321c 100644
--- a/src/alert-unified2-alert.c
+++ b/src/alert-unified2-alert.c
@@ -67,6 +67,9 @@
 /**< Minimum log file limit in MB. */
 #define MIN_LIMIT 1 * 1024 * 1024
 
+/* Default Sensor ID value */
+static uint32_t sensor_id = 0;
+
 /**
  * Unified2 file header struct
  *
@@ -358,7 +361,7 @@ static int Unified2PrintStreamSegmentCallback(Packet *p, void *data, uint8_t *bu
     hdr->type = htonl(UNIFIED2_PACKET_TYPE);
     aun->hdr = hdr;
 
-    phdr->sensor_id = 0;
+    phdr->sensor_id = htonl(sensor_id);
     phdr->linktype = htonl(datalink);
     phdr->event_id = aun->event_id;
     phdr->event_second = phdr->packet_second = htonl(p->ts.tv_sec);
@@ -547,7 +550,7 @@ int Unified2PacketTypeAlert (Unified2AlertThread *aun, Packet *p, uint32_t event
         hdr->type = htonl(UNIFIED2_PACKET_TYPE);
         aun->hdr = hdr;
 
-        phdr->sensor_id = 0;
+        phdr->sensor_id = htonl(sensor_id);
         phdr->linktype = htonl(datalink);
         phdr->event_id =  event_id;
         phdr->event_second = phdr->packet_second = htonl(p->ts.tv_sec);
@@ -638,7 +641,7 @@ int Unified2IPv6TypeAlert (ThreadVars *t, Packet *p, void *data, PacketQueue *pq
     /* fill the gphdr structure with the data of the packet */
     memset(&gphdr, 0, sizeof(gphdr));
     /* FIXME this need to be copied for each alert */
-    gphdr.sensor_id = 0;
+    gphdr.sensor_id = htonl(sensor_id);
     gphdr.event_second =  htonl(p->ts.tv_sec);
     gphdr.event_microsecond = htonl(p->ts.tv_usec);
     gphdr.src_ip = *(struct in6_addr*)GET_IPV6_SRC_ADDR(p);
@@ -783,7 +786,7 @@ int Unified2IPv4TypeAlert (ThreadVars *tv, Packet *p, void *data, PacketQueue *p
 
     /* fill the gphdr structure with the data of the packet */
     memset(&gphdr, 0, sizeof(gphdr));
-    gphdr.sensor_id = 0;
+    gphdr.sensor_id = htonl(sensor_id);
     gphdr.event_id = 0;
     gphdr.event_second =  htonl(p->ts.tv_sec);
     gphdr.event_microsecond = htonl(p->ts.tv_usec);
@@ -1012,6 +1015,17 @@ OutputCtx *Unified2AlertInitCtx(ConfNode *conf)
         }
     }
 
+    if (conf != NULL) {
+        const char *sensor_id_s = NULL;
+        sensor_id_s = ConfNodeLookupChildValue(conf, "sensor-id");
+        if (sensor_id_s != NULL) {
+            if (ByteExtractStringUint32(&sensor_id, 10, 0, sensor_id_s) == -1) {
+                SCLogError(SC_ERR_INVALID_ARGUMENT, "Failed to initialize unified2 output, invalid sensor-id: %s", sensor_id_s);
+                exit(EXIT_FAILURE);
+            }
+        }
+    }
+
     ret = Unified2AlertOpenFileCtx(file_ctx, filename);
     if (ret < 0)
         goto error;