diff --git a/C/userpreds.c b/C/userpreds.c
index d0f236725..e7cfa2a29 100644
--- a/C/userpreds.c
+++ b/C/userpreds.c
@@ -703,7 +703,8 @@ p_softfunctor()
 #endif				/* SFUNC */
 
 #include <math.h>
-*
+
+/*
 static Int
 p_matching_distances(void)
 {