diff --git a/Makefile b/Makefile
index a2dca095..34ffed39 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+-include config.mk
 -include testenv/config.mk
 
 TESTENV_IMAGE ?= kvmd-testenv
diff --git a/config.mk b/config.mk
new file mode 100644
index 00000000..2eb04573
--- /dev/null
+++ b/config.mk
@@ -0,0 +1 @@
+TESTENV_GPIO=/dev/gpiochip1