diff --git a/src/neuroscience/new_agent_event/side_neurite_extension_event.h b/src/neuroscience/new_agent_event/side_neurite_extension_event.h
index b72998ba4..d4c6f802b 100644
--- a/src/neuroscience/new_agent_event/side_neurite_extension_event.h
+++ b/src/neuroscience/new_agent_event/side_neurite_extension_event.h
@@ -16,6 +16,8 @@
 #define NEUROSCIENCE_NEW_AGENT_EVENT_SIDE_NEURITE_EXTENSION_EVENT_H_
 
 #include "core/agent/new_agent_event.h"
+#include "core/container/math_array.h"
+#include "core/real_t.h"
 
 namespace bdm {
 namespace neuroscience {