diff --git a/xbob/learn/activation/main.cpp b/xbob/learn/activation/main.cpp
index a01fc8f72e59929e1086f25a80b03a1c6b121c66..8eaa16ae577f6615822e6ccd3fa93f35af43f619 100644
--- a/xbob/learn/activation/main.cpp
+++ b/xbob/learn/activation/main.cpp
@@ -11,8 +11,9 @@
 #ifdef NO_IMPORT_ARRAY
 #undef NO_IMPORT_ARRAY
 #endif
-#include <xbob.io/api.h>
+#include <xbob.blitz/capi.h>
 #include <xbob.blitz/cleanup.h>
+#include <xbob.io/api.h>
 
 static PyMethodDef module_methods[] = {
     {0}  /* Sentinel */