diff --git a/platform/osx/crash_handler_osx.mm b/platform/osx/crash_handler_osx.mm
index a8146696bc6..2ed88db3090 100644
--- a/platform/osx/crash_handler_osx.mm
+++ b/platform/osx/crash_handler_osx.mm
@@ -43,6 +43,7 @@
 #include <dlfcn.h>
 #include <execinfo.h>
 #include <signal.h>
+#include <stdlib.h>
 
 #include <mach-o/dyld.h>
 #include <mach-o/getsect.h>
diff --git a/platform/x11/crash_handler_x11.cpp b/platform/x11/crash_handler_x11.cpp
index 419b0144756..3c54d5cbc23 100644
--- a/platform/x11/crash_handler_x11.cpp
+++ b/platform/x11/crash_handler_x11.cpp
@@ -39,6 +39,7 @@
 #include <dlfcn.h>
 #include <execinfo.h>
 #include <signal.h>
+#include <stdlib.h>
 
 static void handle_crash(int sig) {
 	if (OS::get_singleton() == NULL)