diff --git a/README.md b/README.md
index 3310494..2b7fa5a 100644
--- a/README.md
+++ b/README.md
@@ -406,7 +406,7 @@ public:
 
     constexpr explicit operator vec<T, 4>() const;
 
-    void swap(qua& other) noexcept(std::is_nothrow_swappable_v<T>);
+    void swap(qua& other) noexcept(is_nothrow_swappable_v<T>);
 
     iterator begin() noexcept;
     const_iterator begin() const noexcept;
diff --git a/headers/vmath.hpp/vmath_fun.hpp b/headers/vmath.hpp/vmath_fun.hpp
index 0f89f7a..ad675d2 100644
--- a/headers/vmath.hpp/vmath_fun.hpp
+++ b/headers/vmath.hpp/vmath_fun.hpp
@@ -281,7 +281,7 @@ namespace vmath_hpp
     }
 
     template < typename T >
-    [[nodiscard]] std::enable_if_t<std::is_floating_point_v<T>, void>
+    std::enable_if_t<std::is_floating_point_v<T>, void>
     sincos(T x, T* s, T* c) noexcept {
         *s = sin(x);
         *c = cos(x);
diff --git a/headers/vmath.hpp/vmath_vec_fun.hpp b/headers/vmath.hpp/vmath_vec_fun.hpp
index 6927a8b..a91ce26 100644
--- a/headers/vmath.hpp/vmath_vec_fun.hpp
+++ b/headers/vmath.hpp/vmath_vec_fun.hpp
@@ -806,7 +806,7 @@ namespace vmath_hpp
     }
 
     template < typename T, std::size_t Size >
-    std::pair<vec<T, Size>, vec<T, Size>> sincos(const vec<T, Size>& xs) {
+    [[nodiscard]] std::pair<vec<T, Size>, vec<T, Size>> sincos(const vec<T, Size>& xs) {
         return { sin(xs), cos(xs) };
     }