diff --git a/include/vmutils.hpp b/include/vmutils.hpp
index d66d7dc..e0bd3bd 100644
--- a/include/vmutils.hpp
+++ b/include/vmutils.hpp
@@ -72,6 +72,8 @@ bool is_jmp(const zydis_decoded_instr_t& instr);
 
 bool is_32_bit_gp(const ZydisRegister reg);
 
+bool is_64_bit_gp(const ZydisRegister reg);
+
 /// <summary>
 /// used by profiles to see if an instruction is a MOV/SX/ZX...
 /// </summary>
diff --git a/src/vmutils.cpp b/src/vmutils.cpp
index f6b9ce3..06cfff7 100644
--- a/src/vmutils.cpp
+++ b/src/vmutils.cpp
@@ -33,6 +33,11 @@ bool is_32_bit_gp(const ZydisRegister reg)
   return reg >= ZYDIS_REGISTER_EAX && reg <= ZYDIS_REGISTER_R15D;
 }
 
+bool is_64_bit_gp(const ZydisRegister reg)
+{
+  return reg >= ZYDIS_REGISTER_RAX && reg <= ZYDIS_REGISTER_R15;
+}
+
 bool flatten(zydis_rtn_t& routine,
              std::uintptr_t routine_addr,
              bool keep_jmps,