diff --git a/src/Processors/Formats/Impl/JSONCompactEachRowRowInputFormat.cpp b/src/Processors/Formats/Impl/JSONCompactEachRowRowInputFormat.cpp
index 1c5843ce97b..95e92709881 100644
--- a/src/Processors/Formats/Impl/JSONCompactEachRowRowInputFormat.cpp
+++ b/src/Processors/Formats/Impl/JSONCompactEachRowRowInputFormat.cpp
@@ -14,7 +14,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int INCORRECT_DATA;
-    extern const int CANNOT_READ_ALL_DATA;
 }