diff --git a/examples/directx11_example/imgui_impl_dx11.cpp b/examples/directx11_example/imgui_impl_dx11.cpp
index 4e209c8..2502b98 100644
--- a/examples/directx11_example/imgui_impl_dx11.cpp
+++ b/examples/directx11_example/imgui_impl_dx11.cpp
@@ -171,11 +171,11 @@
         io.MousePos.y = (signed short)(lParam >> 16); 
         return true;
     case WM_KEYDOWN:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 1;
         return true;
     case WM_KEYUP:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 0;
         return true;
     case WM_CHAR:

diff --git a/examples/directx11_example/imgui_impl_dx11.cpp b/examples/directx11_example/imgui_impl_dx11.cpp
index 4e209c8..2502b98 100644
--- a/examples/directx11_example/imgui_impl_dx11.cpp
+++ b/examples/directx11_example/imgui_impl_dx11.cpp
@@ -171,11 +171,11 @@
         io.MousePos.y = (signed short)(lParam >> 16); 
         return true;
     case WM_KEYDOWN:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 1;
         return true;
     case WM_KEYUP:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 0;
         return true;
     case WM_CHAR:
diff --git a/examples/directx9_example/imgui_impl_dx9.cpp b/examples/directx9_example/imgui_impl_dx9.cpp
index f6f2a11..60302d4 100644
--- a/examples/directx9_example/imgui_impl_dx9.cpp
+++ b/examples/directx9_example/imgui_impl_dx9.cpp
@@ -135,11 +135,11 @@
         io.MousePos.y = (signed short)(lParam >> 16); 
         return true;
     case WM_KEYDOWN:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 1;
         return true;
     case WM_KEYUP:
-        if (wParam >= 0 && wParam < 256)
+        if (wParam < 256)
             io.KeysDown[wParam] = 0;
         return true;
     case WM_CHAR: