diff --git a/src.ts/providers/format.ts b/src.ts/providers/format.ts
index c22f177273..7f4fcc585f 100644
--- a/src.ts/providers/format.ts
+++ b/src.ts/providers/format.ts
@@ -95,7 +95,7 @@ const _formatLog = object({
     blockNumber: getNumber,
     data: formatData,
     index: getNumber,
-    removed: formatBoolean,
+    removed: allowNull(formatBoolean, false),
     topics: arrayOf(formatHash),
     transactionHash: formatHash,
     transactionIndex: getNumber,