diff --git a/src/app-layer.c b/src/app-layer.c
index cfa4761568..50223ed049 100644
--- a/src/app-layer.c
+++ b/src/app-layer.c
@@ -506,7 +506,6 @@ int AppLayerHandleUdp(AlpProtoDetectThreadCtx *dp_ctx, Flow *f, Packet *p)
             /* store the proto and setup the L7 data array */
             FlowL7DataPtrInit(f);
             f->alproto = alproto;
-            f->alflags &= ~FLOW_AL_PROTO_UNKNOWN;
             f->alflags |= FLOW_AL_PROTO_DETECT_DONE;
 
             r = AppLayerParse(f, alproto, f->alflags,
diff --git a/src/flow-util.c b/src/flow-util.c
index 8215e20f61..d0a45013d4 100644
--- a/src/flow-util.c
+++ b/src/flow-util.c
@@ -66,7 +66,6 @@ Flow *FlowAlloc(void)
 
     f->alproto = 0;
     f->aldata = NULL;
-    f->alflags = FLOW_AL_PROTO_UNKNOWN;
 
     return f;
 }
@@ -152,7 +151,6 @@ void FlowInit(Flow *f, Packet *p)
         printf("FIXME: %s:%s:%" PRId32 "\n", __FILE__, __FUNCTION__, __LINE__);
     }
 
-    f->alflags = FLOW_AL_PROTO_UNKNOWN;
     FlowL7DataPtrInit(f);
     COPY_TIMESTAMP(&p->ts, &f->startts);
 
diff --git a/src/flow.h b/src/flow.h
index 25fe520526..ccd39b7f60 100644
--- a/src/flow.h
+++ b/src/flow.h
@@ -213,7 +213,6 @@ typedef struct Flow_
 } Flow;
 
 /** Flow Application Level flags */
-#define FLOW_AL_PROTO_UNKNOWN           0x01
 #define FLOW_AL_PROTO_DETECT_DONE       0x02
 #define FLOW_AL_NO_APPLAYER_INSPECTION  0x04 /** \todo move to flow flags later */
 #define FLOW_AL_STREAM_TOSERVER         0x20