diff --git a/Docs/src/history.but b/Docs/src/history.but
index b5a4ed66..cf04915f 100644
--- a/Docs/src/history.but
+++ b/Docs/src/history.but
@@ -12,6 +12,8 @@ Released on ??? ??th, 20??
 
 \b MakeNSIS prints -CMDHELP to stdout (\W{http://sf.net/p/nsis/bugs/1203}{bug #1203})
 
+\b Added IsNativeProcessorArchitecture helper macros to x64.nsh
+
 \S2{} Translations
 
 \b Fixed minor Spanish bug (\W{http://sf.net/p/nsis/bugs/1205}{bug #1205})
diff --git a/Include/x64.nsh b/Include/x64.nsh
index eeddca8e..ed626319 100644
--- a/Include/x64.nsh
+++ b/Include/x64.nsh
@@ -63,6 +63,16 @@
   !endif
 !macroend
 
+!define IsNativeProcessorArchitecture `"" IsNativeProcessorArchitecture `
+!macro _IsNativeProcessorArchitecture _ignore _arc _t _f
+  !insertmacro _LOGICLIB_TEMP
+  ${GetNativeProcessorArchitecture} $_LOGICLIB_TEMP
+  !insertmacro _= $_LOGICLIB_TEMP ${_arc} `${_t}` `${_f}`
+!macroend
+!define IsNativeProcessorArchitectureIA32 '${IsNativeProcessorArchitecture} 0' ; Intel x86
+!define IsNativeProcessorArchitectureAMD64 '${IsNativeProcessorArchitecture} 9' ; x86-64/x64
+!define IsNativeProcessorArchitectureARM64 '${IsNativeProcessorArchitecture} 12'
+
 
 !define DisableX64FSRedirection "!insertmacro DisableX64FSRedirection"
 !macro DisableX64FSRedirection