diff --git a/backends/imgui_impl_opengl3.cpp b/backends/imgui_impl_opengl3.cpp
index 7be882e06..e917fd36b 100644
--- a/backends/imgui_impl_opengl3.cpp
+++ b/backends/imgui_impl_opengl3.cpp
@@ -385,6 +385,7 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, ImGui_Impl
     glUniform1i(bd->AttribLocationTex, 0);
     glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
 
+    (void)render_state;
 #ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
     if (render_state->UseBindSampler)
     {