diff --git a/base.make.in b/base.make.in
index 123213b95..ada4b095a 100644
--- a/base.make.in
+++ b/base.make.in
@@ -27,7 +27,7 @@ ifeq ($(FOUNDATION_LIB),gnu)
 #
 # FIXME - macro names
 #
-  CONFIG_SYSTEM_INCL += @CPPFLAGS@
+  CONFIG_SYSTEM_INCL += @CPPFLAGS@ @NX_CONST_STRING_CPPFLAGS@
   CONFIG_SYSTEM_LIBS += @LIBS@
   CONFIG_SYSTEM_DEFS += @SYSTEM_DEFS@