diff --git a/eo/src/eo b/eo/src/eo
index 3c6bd22cc..09202b069 100644
--- a/eo/src/eo
+++ b/eo/src/eo
@@ -156,6 +156,7 @@
 
 // initialization
 #include <eoParticleBestInit.h>
+#include <eoInitializer.h>
 
 // velocities
 #include <eoVelocity.h>