diff --git a/Makefile b/Makefile
index 67037e88..91e272e1 100644
--- a/Makefile
+++ b/Makefile
@@ -82,7 +82,7 @@ fuzz: mongoose.c mongoose.h Makefile test/fuzz.c
 	$(RUN) ./fuzzer
 
 fuzz2: mongoose.c mongoose.h Makefile test/fuzz.c
-	$(CC) test/fuzz.c test/packed_fs.c -DMAIN $(CFLAGS) -o fuzzer
+	$(CC) test/fuzz.c -DMAIN $(OPTS) $(WARN) $(ASAN) $(INCS) -o fuzzer
 	$(RUN) ./fuzzer /tmp/fuzzdata
 
 test: Makefile mongoose.h $(SRCS)
diff --git a/test/fuzz.c b/test/fuzz.c
index 212c413d..6974284e 100644
--- a/test/fuzz.c
+++ b/test/fuzz.c
@@ -58,7 +58,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
   mg_json_get(mg_str_n((char *) data, size), "$[0]", &n);
 
   if (size > 0) {
-    struct mip_cfg cfg = {0};
+    struct mip_cfg cfg = {{0,0,0,0,0,0}, 0x01020304, 255, 0x01010101};
     size_t pktlen = 1540;
     char t[sizeof(struct mip_if) + pktlen * 2 + 0 /* qlen */];
     struct mip_if *ifp = (struct mip_if *) t;