diff --git a/include/ircd/Makefile.am b/include/ircd/Makefile.am
index f3a663b64..ab6d96967 100644
--- a/include/ircd/Makefile.am
+++ b/include/ircd/Makefile.am
@@ -65,7 +65,7 @@ spirit.h.gch: ircd.h
 	$(CXX) $(CXXFLAGS) $(AM_CXXFLAGS) -fPIC -o spirit.h.gch $(DEFS) $(CPPFLAGS) $(AM_CPPFLAGS) -DPIC spirit.h
 
 spirit.h.gch: \
-	AM_CXXFLAGS += $(LOWMEM_FLAGS)
+	AM_CXXFLAGS += @BOOST_CPPFLAGS@ $(LOWMEM_FLAGS)
 
 asio.h.gch: ircd.h
 	$(CXX) $(CXXFLAGS) $(AM_CXXFLAGS) -fPIC -o asio.h.gch $(DEFS) $(CPPFLAGS) $(AM_CPPFLAGS) -DPIC asio.h
diff --git a/ircd/Makefile.am b/ircd/Makefile.am
index 6495835b2..6ff83fee1 100644
--- a/ircd/Makefile.am
+++ b/ircd/Makefile.am
@@ -206,6 +206,9 @@ endif
 json.lo:              AM_CPPFLAGS := ${SPIRIT_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
 json.lo:              AM_CXXFLAGS := ${SPIRIT_UNIT_CXXFLAGS} ${AM_CXXFLAGS}
 lex_cast.lo:          AM_CPPFLAGS := @BOOST_CPPFLAGS@ ${AM_CPPFLAGS}
+locale.lo:            AM_CPPFLAGS := @BOOST_CPPFLAGS@ ${AM_CPPFLAGS}
+tokens.lo:            AM_CPPFLAGS := @BOOST_CPPFLAGS@ ${AM_CPPFLAGS}
+prof.lo:              AM_CPPFLAGS := @BOOST_CPPFLAGS@ ${AM_CPPFLAGS}
 if MAGIC
 magic.lo:             AM_CPPFLAGS := @MAGIC_CPPFLAGS@ ${AM_CPPFLAGS}
 endif