diff --git a/ext/sqlite3/libsqlite/sqlite3.c b/ext/sqlite3/libsqlite/sqlite3.c
index d461dad4a47..786a3ec62f0 100644
--- a/ext/sqlite3/libsqlite/sqlite3.c
+++ b/ext/sqlite3/libsqlite/sqlite3.c
@@ -111471,6 +111471,7 @@ static void fts3Appendf(
       z = z2;
     }
     if( z==0 ) *pRc = SQLITE_NOMEM;
+    va_end(ap);
     sqlite3_free(*pz);
     *pz = z;
   }