diff --git a/examples/directx10_example/imgui_impl_dx10.cpp b/examples/directx10_example/imgui_impl_dx10.cpp
index 4670f053..59152673 100644
--- a/examples/directx10_example/imgui_impl_dx10.cpp
+++ b/examples/directx10_example/imgui_impl_dx10.cpp
@@ -228,7 +228,7 @@ void ImGui_ImplDX10_RenderDrawLists(ImDrawData* draw_data)
 static bool IsAnyMouseButtonDown()
 {
     ImGuiIO& io = ImGui::GetIO();
-    for (int n = 0; n < ARRAYSIZE(io.MouseDown); n++)
+    for (int n = 0; n < IM_ARRAYSIZE(io.MouseDown); n++)
         if (io.MouseDown[n])
             return true;
     return false;
diff --git a/examples/directx11_example/imgui_impl_dx11.cpp b/examples/directx11_example/imgui_impl_dx11.cpp
index df02577b..af6e54f4 100644
--- a/examples/directx11_example/imgui_impl_dx11.cpp
+++ b/examples/directx11_example/imgui_impl_dx11.cpp
@@ -235,7 +235,7 @@ void ImGui_ImplDX11_RenderDrawLists(ImDrawData* draw_data)
 static bool IsAnyMouseButtonDown()
 {
     ImGuiIO& io = ImGui::GetIO();
-    for (int n = 0; n < ARRAYSIZE(io.MouseDown); n++)
+    for (int n = 0; n < IM_ARRAYSIZE(io.MouseDown); n++)
         if (io.MouseDown[n])
             return true;
     return false;
diff --git a/examples/directx9_example/imgui_impl_dx9.cpp b/examples/directx9_example/imgui_impl_dx9.cpp
index 24f53ba3..484e84cd 100644
--- a/examples/directx9_example/imgui_impl_dx9.cpp
+++ b/examples/directx9_example/imgui_impl_dx9.cpp
@@ -174,7 +174,7 @@ void ImGui_ImplDX9_RenderDrawLists(ImDrawData* draw_data)
 static bool IsAnyMouseButtonDown()
 {
     ImGuiIO& io = ImGui::GetIO();
-    for (int n = 0; n < ARRAYSIZE(io.MouseDown); n++)
+    for (int n = 0; n < IM_ARRAYSIZE(io.MouseDown); n++)
         if (io.MouseDown[n])
             return true;
     return false;