diff --git a/gtests/net/packetdrill/parser.y b/gtests/net/packetdrill/parser.y
index 8fc4ff21c6a17c58fea7acd92946352fec23cf54..6d3c7f6fe4378753428f23ba6952435dfac7df98 100644
--- a/gtests/net/packetdrill/parser.y
+++ b/gtests/net/packetdrill/parser.y
@@ -5151,6 +5151,9 @@ srs_flags
 	$$ = new_expression(EXPR_WORD);
 	$$->value.string = $3;
 }
+| SRS_FLAGS '=' binary_expression {
+	$$ = $3;
+}
 ;
 
 sctp_reset_streams