diff --git a/eo/src/utils/eoState.h b/eo/src/utils/eoState.h
index 1655e2e2..256dcd96 100644
--- a/eo/src/utils/eoState.h
+++ b/eo/src/utils/eoState.h
@@ -31,6 +31,7 @@
 #include <string>
 #include <map>
 #include <vector>
+#include <assert.h>
 
 #include <eoFunctorStore.h>