diff --git a/tools/viewer/Viewer.cpp b/tools/viewer/Viewer.cpp
index cde26d1c83b9f..603f2b7eba4b3 100644
--- a/tools/viewer/Viewer.cpp
+++ b/tools/viewer/Viewer.cpp
@@ -2378,7 +2378,7 @@ void Viewer::drawImGui() {
 
     if (gShaderErrorHandler.fErrors.count()) {
         ImGui::SetNextWindowSize(ImVec2(400, 400), ImGuiCond_FirstUseEver);
-        ImGui::Begin("Shader Errors");
+        ImGui::Begin("Shader Errors", nullptr, ImGuiWindowFlags_NoFocusOnAppearing);
         for (int i = 0; i < gShaderErrorHandler.fErrors.count(); ++i) {
             ImGui::TextWrapped("%s", gShaderErrorHandler.fErrors[i].c_str());
             SkSL::String sksl(gShaderErrorHandler.fShaders[i].c_str());