diff --git a/bindings/ruby/sample_x86_gdt.rb b/bindings/ruby/sample_x86_gdt.rb
index ea6c9431..cd064452 100644
--- a/bindings/ruby/sample_x86_gdt.rb
+++ b/bindings/ruby/sample_x86_gdt.rb
@@ -16,8 +16,8 @@ A_PRIV_2 = 0x40
 A_PRIV_1 = 0x20
 A_PRIV_0 = 0x0
 
-A_CODE = 0x10
-A_DATA = 0x10
+A_CODE = 0x8
+A_DATA = 0x0
 A_TSS = 0x0
 A_GATE = 0x0