diff --git a/core-buffer/include/jungfrau.hpp b/core-buffer/include/jungfrau.hpp
index e341e92..a68508b 100644
--- a/core-buffer/include/jungfrau.hpp
+++ b/core-buffer/include/jungfrau.hpp
@@ -1,6 +1,7 @@
 #ifndef JUNGFRAU_H
 #define JUNGFRAU_H
 
+#define JUNGFRAU_N_MODULES 32
 #define JUNGFRAU_BYTES_PER_PACKET 8246
 #define JUNGFRAU_DATA_BYTES_PER_PACKET 8192
 #define JUNGFRAU_N_PACKETS_PER_FRAME 128