diff --git a/gsl/multi_span b/gsl/multi_span
index d91f02a..479b074 100644
--- a/gsl/multi_span
+++ b/gsl/multi_span
@@ -1488,7 +1488,7 @@ public:
     constexpr reference operator()(FirstIndex index, OtherIndices... indices)
     {
         index_type idx = {narrow_cast<std::ptrdiff_t>(index),
-                          narrow_cast<std::ptrdiff_t>(indices...)};
+                          narrow_cast<std::ptrdiff_t>(indices)...};
         return this->operator[](idx);
     }
 
diff --git a/tests/multi_span_tests.cpp b/tests/multi_span_tests.cpp
index 8dbe151..0c17944 100644
--- a/tests/multi_span_tests.cpp
+++ b/tests/multi_span_tests.cpp
@@ -941,8 +941,17 @@ SUITE(multi_span_tests)
         {
             multi_span<int, 2, 3> s = arr2d;
             CHECK(s(0, 0) == 1);
+            CHECK(s(0, 1) == 2);
             CHECK(s(1, 2) == 6);
         }
+
+        int arr3d[2][2][2] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+        {
+            multi_span<int, 2, 2, 2> s = arr3d;
+            CHECK(s(0, 0, 0) == 1);
+            CHECK(s(1, 1, 1) == 8);
+        }
     }
 
     TEST(comparison_operators)