diff --git a/build.zig b/build.zig
index 117bdb7..025cb8f 100755
--- a/build.zig
+++ b/build.zig
@@ -36,6 +36,7 @@ pub fn build(b: *Builder) void
     var modelsLoading   = createExe(b, "models_loading"   , "examples/models/models_loading.zig" , "Loads a model and renders it");
     var mouseRay        = createExe(b, "draw_2d"          , "tests/draw_2d.zig"                  , "Testing workaround on 2D drawing functions");
     var drawSphere      = createExe(b, "draw_sphere"      , "tests/draw_sphere.zig"              , "Testing workaround on DrawSphere");
+    var delExitKey      = createExe(b, "del_exit_key"     , "tests/del_exit_key.zig"             , "Testing disabling of exit key");
 
     const examplesStep = b.step("examples", "Builds all the examples");
           examplesStep.dependOn(&basicWindow.step);
diff --git a/lib/raylib-zig.zig b/lib/raylib-zig.zig
index f573066..3824569 100755
--- a/lib/raylib-zig.zig
+++ b/lib/raylib-zig.zig
@@ -423,6 +423,7 @@ pub const TraceLogType = extern enum(c_int) {
     LOG_NONE = 7,
 };
 pub const KeyboardKey = extern enum(c_int) {
+    KEY_NULL = 0,
     KEY_APOSTROPHE = 39,
     KEY_COMMA = 44,
     KEY_MINUS = 45,
diff --git a/tests/del_exit_key.zig b/tests/del_exit_key.zig
new file mode 100644
index 0000000..c04f41d
--- /dev/null
+++ b/tests/del_exit_key.zig
@@ -0,0 +1,46 @@
+//
+// mouse_ray
+// Zig version: 0.6.0
+// Author: Nikolas Wipper
+// Date: 2020-02-15
+//
+
+usingnamespace @import("raylib");
+
+pub fn main() anyerror!void
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const screenWidth = 800;
+    const screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib-zig [core] test - disable exit key");
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+
+    //SetExitKey(@intToEnum(KeyboardKey, 0));
+    SetExitKey(.KEY_NULL);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(WHITE);
+
+
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+}
+
diff --git a/tests/draw_sphere.zig b/tests/draw_sphere.zig
index 2f9b8f0..ff66dfe 100644
--- a/tests/draw_sphere.zig
+++ b/tests/draw_sphere.zig
@@ -14,7 +14,7 @@ pub fn main() anyerror!void
     const screenWidth = 800;
     const screenHeight = 450;
 
-    InitWindow(screenWidth, screenHeight, "raylib-zig [core] example - draw sphere");
+    InitWindow(screenWidth, screenHeight, "raylib-zig [core] test - draw sphere");
 
     var camera = Camera {
         .position = Vector3 { .x = 0.0, .y = 0.0, .z = 0.0 }, // Camera position