diff --git a/ecsact/wasm/detail/emscripten_debug.cc b/ecsact/wasm/detail/emscripten_debug.cc
index 4d2f25c..687000a 100644
--- a/ecsact/wasm/detail/emscripten_debug.cc
+++ b/ecsact/wasm/detail/emscripten_debug.cc
@@ -1,15 +1,16 @@
 #include "ecsact/wasm/detail/emscripten_debug.hh"
+#include <stdexcept>
 
 auto ecsact::wasm::detail::emscripten_debug_segfault(
 	const wasm_val_vec_t* args,
 	wasm_val_vec_t*       results
 ) -> wasm_trap_t* {
-	return nullptr;
+	throw std::logic_error{"segfault"};
 }
 
 auto ecsact::wasm::detail::emscripten_debug_alignfault(
 	const wasm_val_vec_t* args,
 	wasm_val_vec_t*       results
 ) -> wasm_trap_t* {
-	return nullptr;
+	throw std::logic_error{"alignfault"};
 }