diff --git a/SConstruct b/SConstruct
index a48f1ef19631..b9848927c1f8 100755
--- a/SConstruct
+++ b/SConstruct
@@ -370,8 +370,9 @@ if env["prereqs"]:
         conf.CheckBoostIostreamsBZip2() & \
         conf.CheckBoost("random", require_version = boost_version) & \
         conf.CheckBoost("smart_ptr", header_only = True) & \
+	CheckAsio(conf) & \
+	conf.CheckBoost("thread") & \
         conf.CheckBoost("locale") & \
-        CheckAsio(conf) & \
         conf.CheckBoost("filesystem") \
             and Info("Base prerequisites are met")) \
             or Warning("Base prerequisites are not met")
diff --git a/scons/boost.py b/scons/boost.py
index 3e055ccfa542..7b5551715934 100644
--- a/scons/boost.py
+++ b/scons/boost.py
@@ -78,7 +78,7 @@ def CheckBoost(context, boost_lib, require_version = None, header_only = False):
         else:
             env.AppendUnique(CPPPATH = [boostdir], LIBPATH = [boostlibdir])
     if not header_only:
-        env.AppendUnique(LIBS = [libname])
+        env.PrependUnique(LIBS = [libname])
     if boost_lib == "thread" and env["PLATFORM"] == "posix":
         env.AppendUnique(CCFLAGS = ["-pthread"], LINKFLAGS = ["-pthread"])