diff --git a/src/backend/Makefile.am b/src/backend/Makefile.am
index 12110b26f..cf5fe1897 100644
--- a/src/backend/Makefile.am
+++ b/src/backend/Makefile.am
@@ -46,7 +46,7 @@ noinst_HEADERS +=						\
 	$(liblumibackend_a_srcdir)/filehandle.h			\
 	$(liblumibackend_a_srcdir)/filedescriptor.h		\
 	$(liblumibackend_a_srcdir)/filehandlecache.h		\
-	$(liblumibackend_a_srcdir)/interface.c			\
+	$(liblumibackend_a_srcdir)/interface.h			\
 	$(liblumibackend_a_srcdir)/interfaceregistry.h		\
 	$(liblumibackend_a_srcdir)/interfacedescriptor.h	\
 	$(liblumibackend_a_srcdir)/config.h 			\
diff --git a/src/backend/interfaceregistry.c b/src/backend/interfaceregistry.c
index f31755f35..ffa979340 100644
--- a/src/backend/interfaceregistry.c
+++ b/src/backend/interfaceregistry.c
@@ -80,7 +80,6 @@ lumiera_interfacenode_delete (LumieraInterfacenode self)
 }
 
 
-
 /**
  * Initialize the interface registry
  */