diff --git a/external/lgpl3/gmp/dist/mpn/generic/get_d.c b/external/lgpl3/gmp/dist/mpn/generic/get_d.c
index fdb6e7056241..cc755a1b503b 100644
--- a/external/lgpl3/gmp/dist/mpn/generic/get_d.c
+++ b/external/lgpl3/gmp/dist/mpn/generic/get_d.c
@@ -220,7 +220,7 @@ mpn_get_d (mp_srcptr up, mp_size_t size, mp_size_t sign, long exp)
 	  x <<= GMP_NAIL_BITS;
 	  mhi |= x >> nbits >> 11;
 
-	  mlo = x << GMP_LIMB_BITS - nbits - 11;
+	  mlo = x << (GMP_LIMB_BITS - nbits - 11);
 	  nbits = nbits + 11 - GMP_NAIL_BITS;
 	}
       else