diff --git a/src/render.cpp b/src/render.cpp
index 1f12a61..15e2938 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -233,8 +233,8 @@ void imgui_render_string_tree(Arena *arena, String8_Node *root, u16 indent = 0)
   for (String8_Node *node = root; node; node = node->next) {
     ImGui::Text("%s%s", indent_str.c(), node->str.c());
 
-    for (String8_Node *child = node->first_child; child; child = child->next)
-      imgui_render_string_tree(arena, child, indent + 2);
+    if (node->first_child)
+      imgui_render_string_tree(arena, node->first_child, indent + 2);
   }
 }