diff --git a/test/sys/class/i2c-dev/i2c-300/dev b/test/sys/class/i2c-dev/i2c-300/dev
new file mode 100644
index 0000000000..e1ffb89f95
--- /dev/null
+++ b/test/sys/class/i2c-dev/i2c-300/dev
@@ -0,0 +1 @@
+89:300
diff --git a/test/sys/class/i2c-dev/i2c-300/name b/test/sys/class/i2c-dev/i2c-300/name
new file mode 100644
index 0000000000..9357009701
--- /dev/null
+++ b/test/sys/class/i2c-dev/i2c-300/name
@@ -0,0 +1 @@
+foo dev
diff --git a/test/udev-test.pl b/test/udev-test.pl
index 300d822d92..407ecd3b5b 100644
--- a/test/udev-test.pl
+++ b/test/udev-test.pl
@@ -542,6 +542,16 @@ EOF
 		exp_majorminor	=> "8:0",
 		conf		=> <<EOF
 BUS="scsi", KERNEL="sda", NAME="node"
+EOF
+	},
+	{
+		desc		=> "big minor number test",
+		subsys		=> "i2c-dev",
+		devpath		=> "class/i2c-dev/i2c-300",
+		exp_name	=> "node",
+		exp_majorminor	=> "89:300",
+		conf		=> <<EOF
+KERNEL="i2c-300", NAME="node"
 EOF
 	},
 );