diff --git a/aegisub/src/dialog_log.cpp b/aegisub/src/dialog_log.cpp
index 85f39811c..fece5a681 100644
--- a/aegisub/src/dialog_log.cpp
+++ b/aegisub/src/dialog_log.cpp
@@ -39,6 +39,7 @@
 #include "dialog_log.h"
 
 #ifndef AGI_PRE
+#include <algorithm>
 #include <ctime>
 #include <tr1/functional>
 #include <string>