diff --git a/src/libotutil/otutil.h b/src/libotutil/otutil.h
index d6fc603ddf..80acb4751c 100644
--- a/src/libotutil/otutil.h
+++ b/src/libotutil/otutil.h
@@ -51,5 +51,3 @@
 #include <ot-checksum-utils.h>
 #include <ot-gpg-utils.h>
 #include <ot-checksum-instream.h>
-
-void ot_ptrarray_add_many (GPtrArray  *a, ...) G_GNUC_NULL_TERMINATED;