diff --git a/chipmunk/rparse.c b/chipmunk/rparse.c
index 8cbdda5..560e50d 100644
--- a/chipmunk/rparse.c
+++ b/chipmunk/rparse.c
@@ -175,7 +175,7 @@ parse_udprelay( const char*  opt, size_t optlen,
 
     assert( opt && s_addr && s_addrlen && addr && addrlen && port );
 
-    (void) strncpy( s, opt, MAX_OPTLEN );
+    (void) snprintf(s, MAX_OPTLEN, "%s", opt);
     s[ MAX_OPTLEN - 1 ] = '\0';
 
     do {