diff --git a/headers/os/package/PackageArchitecture.h b/headers/os/package/PackageArchitecture.h
index 2527e1b0f3..da2739fa1f 100644
--- a/headers/os/package/PackageArchitecture.h
+++ b/headers/os/package/PackageArchitecture.h
@@ -14,6 +14,7 @@ enum BPackageArchitecture {
 	B_PACKAGE_ARCHITECTURE_X86		= 1,
 	B_PACKAGE_ARCHITECTURE_X86_GCC2	= 2,
 	B_PACKAGE_ARCHITECTURE_SOURCE	= 3,
+	B_PACKAGE_ARCHITECTURE_X86_64	= 4,
 	//
 	B_PACKAGE_ARCHITECTURE_ENUM_COUNT,
 };
diff --git a/src/kits/package/PackageInfo.cpp b/src/kits/package/PackageInfo.cpp
index 7de8cf2d5d..de50705382 100644
--- a/src/kits/package/PackageInfo.cpp
+++ b/src/kits/package/PackageInfo.cpp
@@ -65,6 +65,7 @@ BPackageInfo::kArchitectureNames[B_PACKAGE_ARCHITECTURE_ENUM_COUNT] = {
 	"x86",
 	"x86_gcc2",
 	"source",
+	"x86_64",
 };