1 files changed, 2 insertions, 1 deletions

diff --git a/lmem.h b/lmem.h
index 08358592..dc714fb2 100644
--- a/lmem.h
+++ b/lmem.h
@@ -57,7 +57,8 @@
 #define luaM_freearray(L, b, n)   luaM_free_(L, (b), (n)*sizeof(*(b)))
 
 #define luaM_new(L,t)           cast(t*, luaM_malloc_(L, sizeof(t), 0))
-#define luaM_newvector(L,n,t)   cast(t*, luaM_malloc_(L, (n)*sizeof(t), 0))
+#define luaM_newvector(L,n,t)  \
+        cast(t*, luaM_malloc_(L, cast_sizet(n)*sizeof(t), 0))
 #define luaM_newvectorchecked(L,n,t) \
   (luaM_checksize(L,n,sizeof(t)), luaM_newvector(L,n,t))