diff --git a/headers/vmath.hpp/vmath_mat_fun.hpp b/headers/vmath.hpp/vmath_mat_fun.hpp
index 0bd5306..60e84ef 100644
--- a/headers/vmath.hpp/vmath_mat_fun.hpp
+++ b/headers/vmath.hpp/vmath_mat_fun.hpp
@@ -192,6 +192,13 @@ namespace vmath_hpp::detail
 
 namespace vmath_hpp
 {
+    // +operator
+
+    template < typename T, std::size_t Size >
+    [[nodiscard]] constexpr mat<T, Size> operator+(const mat<T, Size>& xs) {
+        return xs;
+    }
+
     // -operator
 
     template < typename T, std::size_t Size >
diff --git a/headers/vmath.hpp/vmath_vec_fun.hpp b/headers/vmath.hpp/vmath_vec_fun.hpp
index c5c460b..00a1858 100644
--- a/headers/vmath.hpp/vmath_vec_fun.hpp
+++ b/headers/vmath.hpp/vmath_vec_fun.hpp
@@ -165,6 +165,13 @@ namespace vmath_hpp::detail
 
 namespace vmath_hpp
 {
+    // +operator
+
+    template < typename T, std::size_t Size >
+    [[nodiscard]] constexpr vec<T, Size> operator+(const vec<T, Size>& xs) {
+        return xs;
+    }
+
     // -operator
 
     template < typename T, std::size_t Size >
diff --git a/untests/vmath_mat_fun_tests.cpp b/untests/vmath_mat_fun_tests.cpp
index 479fd11..9b8acc7 100644
--- a/untests/vmath_mat_fun_tests.cpp
+++ b/untests/vmath_mat_fun_tests.cpp
@@ -58,7 +58,8 @@ TEST_CASE("vmath/mat_fun") {
     }
 
     SECTION("operators") {
-        STATIC_REQUIRE(-int2x2(1,2,3,4) == int2x2(-1,-2,-3,-4));
+        STATIC_REQUIRE(+int2x2(1,-2,3,-4) == int2x2(1,-2,3,-4));
+        STATIC_REQUIRE(-int2x2(1,-2,3,-4) == int2x2(-1,2,-3,4));
         STATIC_REQUIRE(~uint2x2(0xF0F0F0F0,0x0F0F0F0F,0xF0F0F0F0,0x0F0F0F0F) == uint2x2(0x0F0F0F0F,0xF0F0F0F0,0x0F0F0F0F,0xF0F0F0F0));
         STATIC_REQUIRE(!int2x2(-1,0,1,2) == bool2x2(false,true,false,false));
 
diff --git a/untests/vmath_vec_fun_tests.cpp b/untests/vmath_vec_fun_tests.cpp
index 7efbc38..51a31dd 100644
--- a/untests/vmath_vec_fun_tests.cpp
+++ b/untests/vmath_vec_fun_tests.cpp
@@ -41,6 +41,7 @@ TEST_CASE("vmath/vec_fun") {
     }
 
     SECTION("Operators") {
+        STATIC_REQUIRE(+int2(1,-2) == int2(1,-2));
         STATIC_REQUIRE(-int2(1,-2) == int2(-1,2));
         STATIC_REQUIRE(~uint2(0xF0F0F0F0,0x0F0F0F0F) == uint2(0x0F0F0F0F,0xF0F0F0F0));
         STATIC_REQUIRE(!int3(-1,0,1) == bool3(false, true, false));