diff --git a/lldb/source/Breakpoint/WatchpointResource.cpp b/lldb/source/Breakpoint/WatchpointResource.cpp
index 4b8fbe42c865e..d0f8dc346f3c0 100644
--- a/lldb/source/Breakpoint/WatchpointResource.cpp
+++ b/lldb/source/Breakpoint/WatchpointResource.cpp
@@ -10,6 +10,8 @@
 
 #include "lldb/Breakpoint/WatchpointResource.h"
 
+#include <algorithm>
+
 using namespace lldb;
 using namespace lldb_private;