diff --git a/src/finn/data/cpp/npy2apintstream.hpp b/src/finn/data/cpp/npy2apintstream.hpp
index f6d2c08c738ecc304438c20d7a2e38080b15e616..cbbba759d44174f9ff674423a6392276a7b22b62 100644
--- a/src/finn/data/cpp/npy2apintstream.hpp
+++ b/src/finn/data/cpp/npy2apintstream.hpp
@@ -1,5 +1,7 @@
 #include <iostream>
 #include "cnpy.h"
+#include "hls_stream.h"
+#include "ap_int.h"
 #include <vector>
 
 #ifdef DEBUG