diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index 6fc74b203e..b1f064b8e2 100644
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -659,6 +659,7 @@ again:
 		} else {
 			cf.f_choice = LDAP_FILTER_LE;
 			fop.ors_limit = &fc_limits;
+			memset( &fc_limits, 0, sizeof( fc_limits ));
 			fc_limits.lms_s_unchecked = 1;
 			fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN<=%s)",
 				cf.f_av_value.bv_val );