diff --git a/internal/wire/testdata/InterfaceBindingNotEnoughArgs/want/wire_errs.txt b/internal/wire/testdata/InterfaceBindingNotEnoughArgs/want/wire_errs.txt
index cae32670..01a2f6cc 100644
--- a/internal/wire/testdata/InterfaceBindingNotEnoughArgs/want/wire_errs.txt
+++ b/internal/wire/testdata/InterfaceBindingNotEnoughArgs/want/wire_errs.txt
@@ -1 +1,3 @@
-example.com/foo/wire.go:x:y: not enough arguments in call to wire.Bind
\ No newline at end of file
+example.com/foo/wire.go:x:y: not enough arguments in call to wire.Bind
+	have (*Fooer)
+	want (interface{}, interface{})
\ No newline at end of file
diff --git a/internal/wire/testdata/InterfaceValueNotEnoughArgs/want/wire_errs.txt b/internal/wire/testdata/InterfaceValueNotEnoughArgs/want/wire_errs.txt
index 2081cb51..d11189ad 100644
--- a/internal/wire/testdata/InterfaceValueNotEnoughArgs/want/wire_errs.txt
+++ b/internal/wire/testdata/InterfaceValueNotEnoughArgs/want/wire_errs.txt
@@ -1 +1,3 @@
-example.com/foo/wire.go:x:y: not enough arguments in call to wire.InterfaceValue
\ No newline at end of file
+example.com/foo/wire.go:x:y: not enough arguments in call to wire.InterfaceValue
+	have (string)
+	want (interface{}, interface{})
\ No newline at end of file