1 files changed, 2 insertions, 1 deletions
diff --git a/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp b/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp
index b9d67f86a2127..cf1d34a117bb1 100644
--- a/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp
+++ b/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp
@@ -15,6 +15,7 @@
 
 #include <valarray>
 #include <cassert>
+#include <cstddef>
 
 int main()
 {
@@ -25,7 +26,7 @@ int main()
         std::valarray<T> v(a, N);
         v = 7;
         assert(v.size() == N);
-        for (int i = 0; i < v.size(); ++i)
+        for (std::size_t i = 0; i < v.size(); ++i)
             assert(v[i] == 7);
     }
 }