diff --git a/include/osmocom/mgcp/mgcp.h b/include/osmocom/mgcp/mgcp.h
index 7597af8..5886a65 100644
--- a/include/osmocom/mgcp/mgcp.h
+++ b/include/osmocom/mgcp/mgcp.h
@@ -190,6 +190,7 @@
 	/* RTP patching */
 	int force_constant_ssrc; /* 0: don't, 1: once */
 	int force_aligned_timing;
+	bool rfc5993_hr_convert;
 
 	/* spec handling */
 	int force_realloc;