diff --git a/source/libs/tdb/src/db/tdbPage.c b/source/libs/tdb/src/db/tdbPage.c
index 0340bd3cd4..424b061ee7 100644
--- a/source/libs/tdb/src/db/tdbPage.c
+++ b/source/libs/tdb/src/db/tdbPage.c
@@ -240,5 +240,6 @@ static int tdbPageFree(SPage *pPage, int idx, SCell *pCell, int size) {
 
 static int tdbPageDefragment(SPage *pPage) {
   // TODO
+  ASSERT(0);
   return 0;
 }
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