diff --git a/src/spectator/mocks/double.cr b/src/spectator/mocks/double.cr
index 95538e0..716f2c4 100644
--- a/src/spectator/mocks/double.cr
+++ b/src/spectator/mocks/double.cr
@@ -124,8 +124,8 @@ module Spectator
     # Handle all methods but only respond to configured messages.
     # Raises an `UnexpectedMessage` error for non-configures messages.
     macro method_missing(call)
-      Log.debug { "Got undefined method " + {{call.stringify}} }
-      args = ::Spectator::Arguments.capture({{call.args.splat(", ")}}{% if call.named_args %}{{call.named_args.splat}}{% end %})
+      Log.debug { "Got undefined method `{{call.name}}({{*call.args}}{% if call.named_args %}{% unless call.args.empty? %}, {% end %}{{*call.named_args}}{% end %}){% if call.block %} { ... }{% end %}`" }
+      args = ::Spectator::Arguments.capture({{call.args.splat(", ")}}{% if call.named_args %}{{*call.named_args}}{% end %})
       call = ::Spectator::MethodCall.new({{call.name.symbolize}}, args)
       raise ::Spectator::UnexpectedMessage.new("#{_spectator_stubbed_name} received unexpected message :{{call.name}} with #{args}")
       nil # Necessary for compiler to infer return type as nil. Avoids runtime "can't execute ... `x` has no type errors".