diff --git a/kernel/arm64/trmm_uncopy_sve_v1.c b/kernel/arm64/trmm_uncopy_sve_v1.c
index 75fa163ae..f5c101849 100644
--- a/kernel/arm64/trmm_uncopy_sve_v1.c
+++ b/kernel/arm64/trmm_uncopy_sve_v1.c
@@ -52,11 +52,11 @@ int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG posX, BLASLON
     FLOAT *ao;
 #ifdef DOUBLE
     svint64_t index = svindex_s64(0LL, lda);
-    svbool_t pn = svwhilelt_b64(js, n);
+    svbool_t pn = svwhilelt_b64((uint64_t)js, (uint64_t)n);
     int n_active = svcntp_b64(svptrue_b64(), pn);
 #else
     svint32_t index = svindex_s32(0, lda);
-    svbool_t pn = svwhilelt_b32(js, n);
+    svbool_t pn = svwhilelt_b32((uint64_t)js, (uint64_t)n);
     int n_active = svcntp_b32(svptrue_b32(), pn);
 #endif
     do