diff --git a/lib/voicemeeter/cbindings.rb b/lib/voicemeeter/cbindings.rb
index 662740d..0737de3 100644
--- a/lib/voicemeeter/cbindings.rb
+++ b/lib/voicemeeter/cbindings.rb
@@ -14,7 +14,7 @@ module Voicemeeter
     ffi_convention :stdcall
 
     private_class_method def self.attach_function(c_name, args, returns)
-      ruby_name = "bind_#{Util::String.snakecase(c_name.to_s.delete_prefix("VBVMR_"))}".to_sym
+      ruby_name = :"bind_#{Util::String.snakecase(c_name.to_s.delete_prefix("VBVMR_"))}"
       super(ruby_name, c_name, args, returns)
     end
 
diff --git a/lib/voicemeeter/configs.rb b/lib/voicemeeter/configs.rb
index 27e5b4c..87abe2b 100644
--- a/lib/voicemeeter/configs.rb
+++ b/lib/voicemeeter/configs.rb
@@ -2,8 +2,8 @@ module Voicemeeter
   module Configs
     class TOMLConfBuilder
       def self.run(kind)
-        aouts = (0...kind.phys_out).to_h { |i| ["A#{i + 1}".to_sym, false] }
-        bouts = (0...kind.virt_out).to_h { |i| ["B#{i + 1}".to_sym, false] }
+        aouts = (0...kind.phys_out).to_h { |i| [:"A#{i + 1}", false] }
+        bouts = (0...kind.virt_out).to_h { |i| [:"B#{i + 1}", false] }
         strip_bools = %i[mute mono solo].to_h { |param| [param, false] }
         gain = [:gain].to_h { |param| [param, 0.0] }
 
@@ -24,7 +24,7 @@ module Voicemeeter
         virt_strip =
           (kind.phys_in...kind.phys_in + kind.virt_in).to_h do |i|
             [
-              "strip-#{i}".to_sym,
+              :"strip-#{i}",
               {**aouts, **bouts, **strip_bools, **gain, **overrides}
             ]
           end
@@ -32,7 +32,7 @@ module Voicemeeter
         bus_bools = %i[mute mono].to_h { |param| [param, false] }
         bus =
           (0...kind.num_bus).to_h do |i|
-            ["bus-#{i}".to_sym, {**bus_bools, **gain, **eq}]
+            [:"bus-#{i}", {**bus_bools, **gain, **eq}]
           end
 
         {**phys_strip, **virt_strip, **bus}