diff --git a/modules/core/include/opencv2/core/hal/intrin_rvv_scalable.hpp b/modules/core/include/opencv2/core/hal/intrin_rvv_scalable.hpp
index 463c010d71e2da390bc727d325da70a7b5081b80..d34aa65c4a4b25874c95c8f6e0e6a8de2c3fcb39 100644
--- a/modules/core/include/opencv2/core/hal/intrin_rvv_scalable.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_rvv_scalable.hpp
@@ -1618,7 +1618,7 @@ inline int v_signmask(const _Tpvec& a) \
 { \
     uint8_t ans[4] = {0}; \
     vsm(ans, vmslt(a, 0, VTraits<_Tpvec>::vlanes()), VTraits<_Tpvec>::vlanes()); \
-    return *(reinterpret_cast<int*>(ans)); \
+    return *(reinterpret_cast<int*>(ans)) & (((__int128_t)1 << VTraits<_Tpvec>::vlanes()) - 1); \
 } \
 inline int v_scan_forward(const _Tpvec& a) \
 { \
diff --git a/modules/core/test/test_intrin_utils.hpp b/modules/core/test/test_intrin_utils.hpp
index c1db4f49a5400beebe2fc5326a20ca39f013cf3f..2685d6ac55691a20fa037f46a89aca8c5843400f 100644
--- a/modules/core/test/test_intrin_utils.hpp
+++ b/modules/core/test/test_intrin_utils.hpp
@@ -1081,6 +1081,7 @@ template<typename R> struct TheTest
         typedef typename VTraits<uint_reg>::lane_type uint_type;
 
         Data<R> dataA, dataB(0), dataC, dataD(1), dataE(2);
+        dataA[0] = std::numeric_limits<int_type>::max();
         dataA[1] *= (LaneType)-1;
         union
         {