diff --git a/sys/Makefile.include b/sys/Makefile.include
index 337c8357f0..6d59155f99 100644
--- a/sys/Makefile.include
+++ b/sys/Makefile.include
@@ -82,13 +82,13 @@ endif
 
 ifneq (,$(filter printf_float,$(USEMODULE)))
   ifneq (,$(filter newlib_nano,$(USEMODULE)))
-    export LINKFLAGS += -u _printf_float
+    LINKFLAGS += -u _printf_float
   endif
 endif
 
 ifneq (,$(filter scanf_float,$(USEMODULE)))
   ifneq (,$(filter newlib_nano,$(USEMODULE)))
-    export LINKFLAGS += -u _scanf_float
+    LINKFLAGS += -u _scanf_float
   endif
 endif