diff --git a/src/main.cc b/src/main.cc
index 7102b853..4a4a6bb8 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -453,6 +453,10 @@ void start_or_end_macro_recording(Context& context)
 
 void replay_macro(Context& context)
 {
+    static bool running_macro = false;
+    if (running_macro)
+        throw runtime_error("nested macros not supported");
+
     int count = context.numeric_param();
     context.input_handler().on_next_key([count](const Key& key, Context& context) mutable {
         if (key.modifiers == Key::Modifiers::None)
@@ -460,6 +464,9 @@ void replay_macro(Context& context)
             memoryview<String> reg_val = RegisterManager::instance()[key.key].values(context);
             if (not reg_val.empty())
             {
+                running_macro = true;
+                auto stop_macro = on_scope_end([&] { running_macro = false; });
+
                 scoped_edition edition(context.editor());
                 do { exec_keys(parse_keys(reg_val[0]), context); } while (--count > 0);
             }