diff --git a/test/System/Vector2.cpp b/test/System/Vector2.cpp
index 378e4d46..0dc32cd4 100644
--- a/test/System/Vector2.cpp
+++ b/test/System/Vector2.cpp
@@ -18,14 +18,14 @@ TEST_CASE("[System] sf::Vector2")
     {
         SUBCASE("Default constructor")
         {
-            sf::Vector2i vector;
+            const sf::Vector2i vector;
             CHECK(vector.x == 0);
             CHECK(vector.y == 0);
         }
 
         SUBCASE("(x, y) coordinate constructor")
         {
-            sf::Vector2i vector(1, 2);
+            const sf::Vector2i vector(1, 2);
             CHECK(vector.x == 1);
             CHECK(vector.y == 2);
         }
@@ -146,7 +146,7 @@ TEST_CASE("[System] sf::Vector2")
     SUBCASE("Arithmetic operations between vector and scalar value")
     {
         sf::Vector2i vector(26, 12);
-        int          scalar = 2;
+        const int    scalar = 2;
 
         SUBCASE("vector * scalar")
         {
diff --git a/test/System/Vector3.cpp b/test/System/Vector3.cpp
index 6ab60ba4..92cb977a 100644
--- a/test/System/Vector3.cpp
+++ b/test/System/Vector3.cpp
@@ -14,7 +14,7 @@ TEST_CASE("[System] sf::Vector3")
     {
         SUBCASE("Default constructor")
         {
-            sf::Vector3i vector;
+            const sf::Vector3i vector;
             CHECK(vector.x == 0);
             CHECK(vector.y == 0);
             CHECK(vector.z == 0);
@@ -22,7 +22,7 @@ TEST_CASE("[System] sf::Vector3")
 
         SUBCASE("(x, y, z) coordinate constructor")
         {
-            sf::Vector3i vector(1, 2, 3);
+            const sf::Vector3i vector(1, 2, 3);
             CHECK(vector.x == 1);
             CHECK(vector.y == 2);
             CHECK(vector.z == 3);
@@ -30,8 +30,8 @@ TEST_CASE("[System] sf::Vector3")
 
         SUBCASE("Conversion constructor")
         {
-            sf::Vector3f sourceVector(1.0f, 2.0f, 3.0f);
-            sf::Vector3i vector(sourceVector);
+            const sf::Vector3f sourceVector(1.0f, 2.0f, 3.0f);
+            const sf::Vector3i vector(sourceVector);
 
             CHECK(vector.x == static_cast<int>(sourceVector.x));
             CHECK(vector.y == static_cast<int>(sourceVector.y));
@@ -43,8 +43,8 @@ TEST_CASE("[System] sf::Vector3")
     {
         SUBCASE("-vector")
         {
-            sf::Vector3i vector(1, 2, 3);
-            sf::Vector3i negatedVector = -vector;
+            const sf::Vector3i vector(1, 2, 3);
+            const sf::Vector3i negatedVector = -vector;
 
             CHECK(negatedVector.x == -1);
             CHECK(negatedVector.y == -2);
@@ -54,8 +54,8 @@ TEST_CASE("[System] sf::Vector3")
 
     SUBCASE("Arithmetic operations between two vectors")
     {
-        sf::Vector3i firstVector(2, 5, 6);
-        sf::Vector3i secondVector(8, 3, 7);
+        sf::Vector3i       firstVector(2, 5, 6);
+        const sf::Vector3i secondVector(8, 3, 7);
 
         SUBCASE("vector += vector")
         {
@@ -77,7 +77,7 @@ TEST_CASE("[System] sf::Vector3")
 
         SUBCASE("vector + vector")
         {
-            sf::Vector3i result = firstVector + secondVector;
+            const sf::Vector3i result = firstVector + secondVector;
 
             CHECK(result.x == 10);
             CHECK(result.y == 8);
@@ -86,7 +86,7 @@ TEST_CASE("[System] sf::Vector3")
 
         SUBCASE("vector - vector")
         {
-            sf::Vector3i result = firstVector - secondVector;
+            const sf::Vector3i result = firstVector - secondVector;
 
             CHECK(result.x == -6);
             CHECK(result.y == 2);
@@ -97,7 +97,7 @@ TEST_CASE("[System] sf::Vector3")
     SUBCASE("Arithmetic operations between vector and scalar value")
     {
         sf::Vector3i vector(26, 12, 6);
-        int          scalar = 2;
+        const int    scalar = 2;
 
         SUBCASE("vector * scalar")
         {
@@ -147,9 +147,9 @@ TEST_CASE("[System] sf::Vector3")
 
     SUBCASE("Comparison operations (two equal and one different vector)")
     {
-        sf::Vector3i firstEqualVector(1, 5, 6);
-        sf::Vector3i secondEqualVector(1, 5, 6);
-        sf::Vector3i differentVector(6, 9, 7);
+        const sf::Vector3i firstEqualVector(1, 5, 6);
+        const sf::Vector3i secondEqualVector(1, 5, 6);
+        const sf::Vector3i differentVector(6, 9, 7);
 
         SUBCASE("vector == vector")
         {