diff --git a/setup.py b/setup.py
index 55a8f8d37..e8d2a68e0 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ print "Attempting to detect your system information"
 if platform.machine() == "i386" or platform.machine() == "i686":
 	print "32bit x86 system detected"
 	ARCH = "x86"
-elif platform.machine() == "x86_64":
+elif platform.machine() == "x86_64" or platform.machine() == "amd64":
 	print "64bit x86_64 system detected"
 	ARCH = "x64"
 elif platform.processor() == "powerpc":