diff --git a/src/Processors/Transforms/PlanSquashingTransform.cpp b/src/Processors/Transforms/PlanSquashingTransform.cpp
index 51c637f745b..2cb0a19ecdb 100644
--- a/src/Processors/Transforms/PlanSquashingTransform.cpp
+++ b/src/Processors/Transforms/PlanSquashingTransform.cpp
@@ -5,6 +5,11 @@
 namespace DB
 {
 
+namespace ErrorCodes
+{
+    extern const int LOGICAL_ERROR;
+}
+
 PlanSquashingTransform::PlanSquashingTransform(const Block & header, size_t min_block_size_rows, size_t min_block_size_bytes, size_t num_ports)
     : IProcessor(InputPorts(num_ports, header), OutputPorts(num_ports, header)), balance(header, min_block_size_rows, min_block_size_bytes)
 {