diff --git a/lib/voicemeeter/cbindings.rb b/lib/voicemeeter/cbindings.rb
index 390de12..732ce7f 100644
--- a/lib/voicemeeter/cbindings.rb
+++ b/lib/voicemeeter/cbindings.rb
@@ -1,11 +1,13 @@
 require_relative "install"
 require_relative "errors"
 require_relative "util"
+require_relative "logger"
 
 module Voicemeeter
   module CBindings
     private
 
+    extend Logging
     extend FFI::Library
 
     VM_PATH = Install.get_vmpath
@@ -53,14 +55,21 @@ module Voicemeeter
     attach_function :VBVMR_GetMidiMessage, %i[pointer long], :long
 
     def call(fn, *args, ok: [0], exp: nil)
+      to_cname = -> {
+        "VBVMR_#{Util::String.camelcase(fn.to_s.delete_prefix("bind_"))
+        .gsub(/(Button|Input|Output)/, '\1_')}"
+      }
+
       res = send(fn, *args)
       if exp.nil?
         unless ok.include?(res)
-          raise Errors::VMCAPIError.new fn, res
+          logger.error "#{to_cname.call} returned #{res}"
+          raise Errors::VMCAPIError.new to_cname.call, res
         end
       else
         unless exp.call(res) || ok.include?(res)
-          raise Errors::VMCAPIError.new fn, res
+          logger.error "#{to_cname.call} returned #{res}"
+          raise Errors::VMCAPIError.new to_cname.call, res
         end
       end
       res
diff --git a/lib/voicemeeter/errors.rb b/lib/voicemeeter/errors.rb
index dac5f4d..1c1fc69 100644
--- a/lib/voicemeeter/errors.rb
+++ b/lib/voicemeeter/errors.rb
@@ -6,10 +6,10 @@ module Voicemeeter
     end
 
     class VMCAPIError < VMError
-      attr_reader :code
+      attr_reader :fn_name, :code
 
-      def initialize(ruby_name, code)
-        @ruby_name = ruby_name
+      def initialize(fn_name, code)
+        @fn_name = fn_name
         @code = code
         super(message)
       end
@@ -17,10 +17,6 @@ module Voicemeeter
       def message
         "#{fn_name} returned #{code}"
       end
-
-      def fn_name
-        "VBVMR_#{Util::String.camelcase(@ruby_name.to_s.delete_prefix("bind_")).sub("macro_button", "macrobutton")}"
-      end
     end
   end
 end