diff --git a/include/rx/ranges.hpp b/include/rx/ranges.hpp
index 116e818..6d6f5e4 100644
--- a/include/rx/ranges.hpp
+++ b/include/rx/ranges.hpp
@@ -468,7 +468,7 @@ struct iterator_range {
 
     template <class C>
     constexpr explicit iterator_range(const C& collection) noexcept
-        : current_(begin(collection)), end_(end(collection)) {}
+        : current_(std::begin(collection)), end_(std::end(collection)) {}
     constexpr iterator_range(It begin, EndIt end) noexcept : current_(begin), end_(end) {}
 
     constexpr void next() noexcept {
@@ -1149,7 +1149,7 @@ struct ZipRange {
     static constexpr bool is_idempotent = (is_idempotent_v<Inputs> && ...);
 
     template <class... Tx>
-    constexpr explicit ZipRange(std::tuple<Tx...>&& tuple) : inputs(tuple) {}
+    constexpr explicit ZipRange(std::tuple<Tx...>&& tuple) : inputs(std::move(tuple)) {}
 
     [[nodiscard]] constexpr output_type get() const noexcept {
         RX_ASSERT(!at_end());