diff --git a/errors.go b/errors.go
new file mode 100644
index 0000000..74fc99d
--- /dev/null
+++ b/errors.go
@@ -0,0 +1,9 @@
+package mstdn
+
+import (
+	"sourcecode.social/reiver/go-erorr"
+)
+
+const (
+	errNilReceiver = erorr.Error("mstdn: nil receiver")
+)