diff --git a/.gitignore b/.gitignore
index 0092ea6f..2aa3170e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,5 @@
 /src/apps/snmp/LwipMibCompiler/SharpSnmpLib/obj/
 /src/apps/snmp/LwipMibCompiler/LwipMibCompiler.userprefs
 /src/apps/snmp/LwipMibCompiler/*.suo
+/test/fuzz/output
+/test/lwip_fuzz
diff --git a/test/fuzz/Makefile b/test/fuzz/Makefile
index bc12ca97..834c078b 100644
--- a/test/fuzz/Makefile
+++ b/test/fuzz/Makefile
@@ -32,7 +32,9 @@
 all compile: lwip_fuzz
 .PHONY: all clean
 
-include ../Common.mk
+CONTRIBDIR=../../../lwip-contrib
+
+include $(CONTRIBDIR)/ports/unix/Common.mk
 
 CC=afl-gcc
 LDFLAGS:=$(LDFLAGS) -lm