diff --git a/src/sqlite3.c b/src/sqlite3.c
index b80d9f2aa739cfdf41b171ed6cf9f8e768f5e3a3..153538c2559338c41dd9500daf441f49a949d867 100644
--- a/src/sqlite3.c
+++ b/src/sqlite3.c
@@ -231974,7 +231974,7 @@ static void fts5SegIterNext_None(
 
   if( iOff<pIter->iEndofDoclist ){
     /* Next entry is on the current page */
-    i64 iDelta;
+    u64 iDelta;
     iOff += sqlite3Fts5GetVarint(&pIter->pLeaf->p[iOff], (u64*)&iDelta);
     pIter->iLeafOffset = iOff;
     pIter->iRowid += iDelta;