diff --git a/libbacktrace/UnwindCurrent.h b/libbacktrace/UnwindCurrent.h
index 2375e6e..3023996 100644
--- a/libbacktrace/UnwindCurrent.h
+++ b/libbacktrace/UnwindCurrent.h
@@ -17,27 +17,32 @@
 #ifndef _LIBBACKTRACE_UNWIND_CURRENT_H
 #define _LIBBACKTRACE_UNWIND_CURRENT_H
 
+#include <stdint.h>
+#include <sys/types.h>
+#include <ucontext.h>
+
 #include <string>
 
-#include "BacktraceImpl.h"
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
+
+#include "BacktraceCurrent.h"
 
 #define UNW_LOCAL_ONLY
 #include <libunwind.h>
 
-class UnwindCurrent : public BacktraceImpl {
+class UnwindCurrent : public BacktraceCurrent {
 public:
-  UnwindCurrent();
-  virtual ~UnwindCurrent();
+  UnwindCurrent(pid_t pid, pid_t tid, BacktraceMap* map) : BacktraceCurrent(pid, tid, map) {}
+  virtual ~UnwindCurrent() {}
 
-  virtual bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext);
+  std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset) override;
 
-  virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset);
+private:
+  void GetUnwContextFromUcontext(const ucontext_t* ucontext);
 
-  bool UnwindFromContext(size_t num_ignore_frames, bool within_handler);
+  bool UnwindFromContext(size_t num_ignore_frames, ucontext_t* ucontext) override;
 
-  void GetUnwContextFromUcontext(const ucontext_t* context);
-
-protected:
   unw_context_t context_;
 };