diff --git a/src/app-layer-parser.c b/src/app-layer-parser.c
index 4c6734fdc2..d77a5c70bf 100644
--- a/src/app-layer-parser.c
+++ b/src/app-layer-parser.c
@@ -249,7 +249,7 @@ AppLayerParserThreadCtx *AppLayerParserThreadCtxAlloc(void)
     SCEnter();
 
     AppProto alproto = 0;
-    int flow_proto = 0;
+    uint8_t flow_proto = 0;
     AppLayerParserThreadCtx *tctx;
 
     tctx = SCMalloc(sizeof(*tctx));
@@ -275,7 +275,7 @@ void AppLayerParserThreadCtxFree(AppLayerParserThreadCtx *tctx)
     SCEnter();
 
     AppProto alproto = 0;
-    int flow_proto = 0;
+    uint8_t flow_proto = 0;
 
     for (flow_proto = 0; flow_proto < FLOW_PROTO_DEFAULT; flow_proto++) {
         for (alproto = 0; alproto < ALPROTO_MAX; alproto++) {
diff --git a/src/app-layer-register.h b/src/app-layer-register.h
index b470761c35..90b3402b62 100644
--- a/src/app-layer-register.h
+++ b/src/app-layer-register.h
@@ -27,7 +27,7 @@
 typedef struct AppLayerParser {
     const char *name;
     const char *default_port;
-    int ip_proto;
+    uint8_t ip_proto;
 
     ProbingParserFPtr ProbeTS;
     ProbingParserFPtr ProbeTC;