diff --git a/include/nuttx/lib/math32.h b/include/nuttx/lib/math32.h
index 14fd78577bbb8..d793779b9b135 100644
--- a/include/nuttx/lib/math32.h
+++ b/include/nuttx/lib/math32.h
@@ -495,7 +495,8 @@ static inline_function uint64_t invdiv_umulh64(uint64_t a, uint64_t b)
    * the inline assembly.
    */
 
-  __uint128_t res128 = (__uint128_t)a * b;
+  __uint128_t a128 = a;
+  __uint128_t res128 = a128 * b;
   return res128 >> 64;
 #endif
 }
@@ -542,7 +543,8 @@ void invdiv_init_param64(uint64_t d, FAR invdiv_param64_t *param)
 
   param->mult = q[0] + 1;
 #else
-  param->mult  = ((__uint128_t)1 << 64) * t / d + 1;
+  __uint128_t one128 = 1;
+  param->mult = (one128 << 64) * t / d + 1;
 #endif
   param->shift = l - 1;
 }