diff --git a/cpp/src/arrow/array/array_nested.cc b/cpp/src/arrow/array/array_nested.cc
index 03f3e5af29908..fe1768bbbff2b 100644
--- a/cpp/src/arrow/array/array_nested.cc
+++ b/cpp/src/arrow/array/array_nested.cc
@@ -286,14 +286,17 @@ Result<std::shared_ptr<Array>> FlattenListViewArray(const ListViewArrayT& list_v
   const auto* offsets = list_view_array.data()->template GetValues<offset_type>(1);
   const auto* sizes = list_view_array.data()->template GetValues<offset_type>(2);
 
-  auto is_null_or_empty = [&](int64_t i) {
-    if constexpr (HasNulls) {
+  std::function<bool(int64_t)> is_null_or_empty;
+  if constexpr (HasNulls) {
+    is_null_or_empty = [&](int64_t i) {
       if (!bit_util::GetBit(validity, list_view_array_offset + i)) {
         return true;
       }
-    }
-    return sizes[i] == 0;
-  };
+      return sizes[i] == 0;
+    };
+  } else {
+    is_null_or_empty = [&](int64_t i) { return sizes[i] == 0; };
+  }
 
   // Index of the first valid, non-empty list-view.
   int64_t first_i = 0;