diff --git a/src/include/Makefile.am b/src/include/Makefile.am
index ca8c12773..13b9a1444 100644
--- a/src/include/Makefile.am
+++ b/src/include/Makefile.am
@@ -15,6 +15,7 @@ talerinclude_HEADERS = \
   taler_exchange_service.h \
   taler_exchangedb_lib.h \
   taler_exchangedb_plugin.h \
+  taler_extensions.h \
   taler_fakebank_lib.h \
   taler_json_lib.h \
   taler_testing_lib.h \