diff --git a/lib/floattixf.c b/lib/floattixf.c
index d550296..77d9060 100644
--- a/lib/floattixf.c
+++ b/lib/floattixf.c
@@ -78,7 +78,7 @@
         /* a is now rounded to LDBL_MANT_DIG bits */
     }
     long_double_bits fb;
-    fb.u.high.low = ((su_int)s & 0x8000) |        /* sign */
+    fb.u.high.s.low = ((su_int)s & 0x8000) |        /* sign */
                     (e + 16383);                  /* exponent */
     fb.u.low.all = (du_int)a;                     /* mantissa */
     return fb.f;