diff --git a/src/highlighters.cc b/src/highlighters.cc
index 871d549c..11d13adc 100644
--- a/src/highlighters.cc
+++ b/src/highlighters.cc
@@ -12,6 +12,7 @@
 #include "option_types.hh"
 #include "parameters_parser.hh"
 #include "register_manager.hh"
+#include "regex.hh"
 #include "string.hh"
 #include "window.hh"
 #include "utf8.hh"
diff --git a/src/option_manager.hh b/src/option_manager.hh
index 5cc39e92..4824f88c 100644
--- a/src/option_manager.hh
+++ b/src/option_manager.hh
@@ -6,9 +6,10 @@
 #include "exception.hh"
 #include "flags.hh"
 #include "option_types.hh"
-#include "regex.hh"
 #include "vector.hh"
 
+#include <memory>
+
 namespace Kakoune
 {