diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h
index 54ec9fc154ca2..a522d850cb37d 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h
@@ -38,7 +38,7 @@ class NativeRegisterContextFreeBSD_x86_64
       public NativeRegisterContextDBReg_x86 {
 public:
   NativeRegisterContextFreeBSD_x86_64(const ArchSpec &target_arch,
-                                      NativeThreadProtocol &native_thread);
+                                      NativeThreadFreeBSD &native_thread);
   uint32_t GetRegisterSetCount() const override;
 
   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;