diff --git a/expression/expression.go b/expression/expression.go
index ba3405796c7fb..95bc45f72b6ad 100644
--- a/expression/expression.go
+++ b/expression/expression.go
@@ -1023,8 +1023,7 @@ func canFuncBePushed(sf *ScalarFunction, storeType kv.StoreType) bool {
 		// json functions.
 		ast.JSONType,
 		ast.JSONExtract,
-		// FIXME: JSONUnquote is incompatible with Coprocessor
-		// ast.JSONUnquote,
+		ast.JSONUnquote,
 		ast.JSONObject,
 		ast.JSONArray,
 		ast.JSONMerge,