diff --git a/src/spectator/mocks/double.cr b/src/spectator/mocks/double.cr
index b45b9c8..d099969 100644
--- a/src/spectator/mocks/double.cr
+++ b/src/spectator/mocks/double.cr
@@ -184,11 +184,12 @@ module Spectator
     # Handle all methods but only respond to configured messages.
     # Raises an `UnexpectedMessage` error for non-configures messages.
     macro method_missing(call)
-      Log.trace { "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 %})
+      args = ::Spectator::Arguments.build({{call.args.splat(", ")}}{{call.named_args.splat if call.named_args}})
       call = ::Spectator::MethodCall.new({{call.name.symbolize}}, args)
       _spectator_record_call(call)
 
+      Log.trace { "#{_spectator_stubbed_name} got undefined method `#{call}{% if call.block %} { ... }{% end %}`" }
+
       raise ::Spectator::UnexpectedMessage.new("#{_spectator_stubbed_name} received unexpected message #{call}")
       nil # Necessary for compiler to infer return type as nil. Avoids runtime "can't execute ... `x` has no type errors".
     end
diff --git a/src/spectator/mocks/lazy_double.cr b/src/spectator/mocks/lazy_double.cr
index a0158ef..a53c0da 100644
--- a/src/spectator/mocks/lazy_double.cr
+++ b/src/spectator/mocks/lazy_double.cr
@@ -52,13 +52,13 @@ module Spectator
 
     # Handles all messages.
     macro method_missing(call)
-      Log.trace { "Got undefined method `{{call.name}}({{*call.args}}{% if call.named_args %}{% unless call.args.empty? %}, {% end %}{{*call.named_args}}{% end %}){% if call.block %} { ... }{% end %}`" }
-
       # Capture information about the call.
-      %args = ::Spectator::Arguments.capture({{call.args.splat(", ")}}{% if call.named_args %}{{*call.named_args}}{% end %})
+      %args = ::Spectator::Arguments.build({{call.args.splat(", ")}}{{call.named_args.splat if call.named_args}})
       %call = ::Spectator::MethodCall.new({{call.name.symbolize}}, %args)
       _spectator_record_call(%call)
 
+      Log.trace { "#{_spectator_stubbed_name} got undefined method `#{%call}{% if call.block %} { ... }{% end %}`" }
+
       # Attempt to find a stub that satisfies the method call and arguments.
       if %stub = _spectator_find_stub(%call)
         # Cast the stub or return value to the expected type.
diff --git a/src/spectator/mocks/null_double.cr b/src/spectator/mocks/null_double.cr
index 978418c..c139737 100644
--- a/src/spectator/mocks/null_double.cr
+++ b/src/spectator/mocks/null_double.cr
@@ -51,13 +51,13 @@ module Spectator
     # Handles all undefined messages.
     # Returns stubbed values if available, otherwise delegates to `#_spectator_abstract_stub_fallback`.
     macro method_missing(call)
-      Log.trace { "Got undefined method `{{call.name}}({{*call.args}}{% if call.named_args %}{% unless call.args.empty? %}, {% end %}{{*call.named_args}}{% end %}){% if call.block %} { ... }{% end %}`" }
-
       # Capture information about the call.
-      %args = ::Spectator::Arguments.capture({{call.args.splat(", ")}}{% if call.named_args %}{{*call.named_args}}{% end %})
+      %args = ::Spectator::Arguments.build({{call.args.splat(", ")}}{{call.named_args.splat if call.named_args}})
       %call = ::Spectator::MethodCall.new({{call.name.symbolize}}, %args)
       _spectator_record_call(%call)
 
+      Log.trace { "#{_spectator_stubbed_name} got undefined method `#{%call}{% if call.block %} { ... }{% end %}`" }
+
       self
     end
   end