diff --git a/src/system/libroot/os/arch/x86_64/Jamfile b/src/system/libroot/os/arch/x86_64/Jamfile
index 2cda1c64f7..26b8c27ddd 100644
--- a/src/system/libroot/os/arch/x86_64/Jamfile
+++ b/src/system/libroot/os/arch/x86_64/Jamfile
@@ -1,5 +1,7 @@
 SubDir HAIKU_TOP src system libroot os arch x86_64 ;
 
+SubDirC++Flags -std=gnu++11 ;
+
 local architectureObject ;
 for architectureObject in [ MultiArchSubDirSetup x86_64 ] {
 	on $(architectureObject) {