diff --git a/src/gui_engine.cpp b/src/gui_engine.cpp
index fb0f2f9..0d02e66 100644
--- a/src/gui_engine.cpp
+++ b/src/gui_engine.cpp
@@ -39,12 +39,13 @@ bool GuiEngine::checkValidationLayerSupport()
     std::vector<VkLayerProperties> available_layers(layer_count);
     vkEnumerateInstanceLayerProperties(&layer_count, available_layers.data());
 
-    for (const std::string &layer_name : validation_layers)
+    for (const char *layer_name : validation_layers)
     {
         bool layer_found = false;
+        const std::string layer_name_str(layer_name);
         for (const VkLayerProperties &layer_properties : available_layers)
         {
-            if (layer_name == layer_properties.layerName)
+            if (layer_name_str == layer_properties.layerName)
             {
                 layer_found = true;
                 break;
diff --git a/src/widget/widget_control.cpp b/src/widget/widget_control.cpp
index bf7fd9e..b222b6b 100644
--- a/src/widget/widget_control.cpp
+++ b/src/widget/widget_control.cpp
@@ -473,14 +473,14 @@ void ControlWidget::drawNumericValue(
     ImGui::SetCursorPosX(ImGui::GetCursorPosX() + draw_width / 2);
     if (!from_val.empty())
     {
-        ImGui::Text(from_val.c_str());
+        ImGui::Text("%s", from_val.c_str());
         ImGui::SameLine();
     }
     draw_function();
     if (!to_val.empty())
     {
         ImGui::SameLine();
-        ImGui::Text(to_val.c_str());
+        ImGui::Text("%s", to_val.c_str());
     }
 }