diff --git a/rak/regex.h b/rak/regex.h
index 99d53a1e..877a52b3 100644
--- a/rak/regex.h
+++ b/rak/regex.h
@@ -43,6 +43,7 @@
 
 #include <sys/types.h>
 
+#include <algorithm>
 #include <functional>
 #include <string>
 #include <list>
diff --git a/src/utils/lockfile.cc b/src/utils/lockfile.cc
index 17a22f86..58597333 100644
--- a/src/utils/lockfile.cc
+++ b/src/utils/lockfile.cc
@@ -36,6 +36,7 @@
 
 #include "config.h"
 
+#include <algorithm>
 #include <cctype>
 #include <cerrno>
 #include <cstring>