diff --git a/core/storage/sqlite3_ondisk.rs b/core/storage/sqlite3_ondisk.rs
index 190b94479..93f897dc1 100644
--- a/core/storage/sqlite3_ondisk.rs
+++ b/core/storage/sqlite3_ondisk.rs
@@ -1601,7 +1601,7 @@ pub fn write_varint(buf: &mut [u8], value: u64) -> usize {
         return 9;
     }
 
-    let mut encoded: [u8; 10] = [0; 10];
+    let mut encoded: [u8; 9] = [0; 9];
     let mut bytes = value;
     let mut n = 0;
     while bytes != 0 {
diff --git a/tests/integration/query_processing/test_btree.rs b/tests/integration/query_processing/test_btree.rs
index e55c512f0..c24d025d6 100644
--- a/tests/integration/query_processing/test_btree.rs
+++ b/tests/integration/query_processing/test_btree.rs
@@ -130,7 +130,7 @@ pub fn write_varint(buf: &mut [u8], value: u64) -> usize {
         return 9;
     }
 
-    let mut encoded: [u8; 10] = [0; 10];
+    let mut encoded: [u8; 9] = [0; 9];
     let mut bytes = value;
     let mut n = 0;
     while bytes != 0 {