diff --git a/bridges/bridge_native_rtp.c b/bridges/bridge_native_rtp.c
index 980f467164378f82cc1c23ff4b070a43e51b6d57..d5652bc78fe14d80d69a7bf03a00e97fbb118006 100644
--- a/bridges/bridge_native_rtp.c
+++ b/bridges/bridge_native_rtp.c
@@ -310,8 +310,8 @@ static int native_rtp_bridge_compatible(struct ast_bridge *bridge)
 	RAII_VAR(struct ast_rtp_instance *, instance1, NULL, ao2_cleanup);
 	RAII_VAR(struct ast_rtp_instance *, vinstance0, NULL, ao2_cleanup);
 	RAII_VAR(struct ast_rtp_instance *, vinstance1, NULL, ao2_cleanup);
-	RAII_VAR(struct ast_format_cap *, cap0, ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT), ao2_cleanup);
-	RAII_VAR(struct ast_format_cap *, cap1, ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT), ao2_cleanup);
+	RAII_VAR(struct ast_format_cap *, cap0, NULL, ao2_cleanup);
+	RAII_VAR(struct ast_format_cap *, cap1, NULL, ao2_cleanup);
 	int read_ptime0, read_ptime1, write_ptime0, write_ptime1;
 
 	/* We require two channels before even considering native bridging */
@@ -361,6 +361,12 @@ static int native_rtp_bridge_compatible(struct ast_bridge *bridge)
 		return 0;
 	}
 
+	cap0 = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
+	cap1 = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
+	if (!cap0 || !cap1) {
+		return 0;
+	}
+
 	/* Make sure that codecs match */
 	if (glue0->get_codec) {
 		glue0->get_codec(bc0->chan, cap0);