diff --git a/debug/crash_posix.cpp b/debug/crash_posix.cpp
index 88f313ca..aaa8eefb 100644
--- a/debug/crash_posix.cpp
+++ b/debug/crash_posix.cpp
@@ -13,6 +13,8 @@
 #include "../map/fixed.hpp"
 
 #include <signal.h>
+
+#include <iostream>
 #include <cstring>