diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index 1f1844f5b2..ebdf7c9b10 100644
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -1051,7 +1051,7 @@ uint64_t HELPER(neon_qrshl_u64)(CPUARMState *env, uint64_t val, uint64_t shiftop
     if (tmp >= (ssize_t)sizeof(src1) * 8) { \
         if (src1) { \
             SET_QC(); \
-            dest = (1 << (sizeof(src1) * 8 - 1)); \
+            dest = (typeof(dest))(1 << (sizeof(src1) * 8 - 1)); \
             if (src1 > 0) { \
                 dest--; \
             } \