diff --git a/gnu/lib/libgcc/Makefile b/gnu/lib/libgcc/Makefile
index d9521d44b6e..21846bbd389 100644
--- a/gnu/lib/libgcc/Makefile
+++ b/gnu/lib/libgcc/Makefile
@@ -145,6 +145,7 @@ LIB1ASMFUNCS = __divxf3 __divdf3 __divsf3 \
 	__divsi3 __modsi3 __udivsi3 __umodsi3 __save_stack_nonlocal \
 	__nonlocal_goto __restore_stack_nonlocal __trampoline \
 	_fixtfdi _fixunstfdi _floatditf
+LIB2FUNCS += _bswapsi2 _bswapdi2
 LIB2ADDEH = unwind-ia64.c unwind-sjlj.c unwind-c.c
 .endif