diff --git a/libraries/liblmdb/CHANGES b/libraries/liblmdb/CHANGES
index efb11133d3..d19632fe67 100644
--- a/libraries/liblmdb/CHANGES
+++ b/libraries/liblmdb/CHANGES
@@ -8,6 +8,7 @@ LMDB 0.9.17 Release Engineering
 	Fix ITS#8258 rebalance/split assert
 	Fix ITS#8263 cursor_put cursor tracking
 	Fix ITS#8264 cursor_del cursor tracking
+	Fix ITS#8310 cursor_del cursor tracking
 	Fix ITS#8299 mdb_del cursor tracking
 	Fix ITS#8300 mdb_del cursor tracking
 	Fix ITS#8304 mdb_del cursor tracking
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 9af3704f78..fdfcb35109 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -7970,9 +7970,9 @@ mdb_rebalance(MDB_cursor *mc)
 						m3 = &m2->mc_xcursor->mx_cursor;
 					else
 						m3 = m2;
-					if (m3 == mc || m3->mc_snum < mc->mc_snum) continue;
+					if (m3 == mc) continue;
 					if (m3->mc_pg[0] == mp) {
-						for (i=0; i<m3->mc_snum; i++) {
+						for (i=0; i<mc->mc_db->md_depth; i++) {
 							m3->mc_pg[i] = m3->mc_pg[i+1];
 							m3->mc_ki[i] = m3->mc_ki[i+1];
 						}