diff --git a/cpp-ch/local-engine/Common/CHUtil.cpp b/cpp-ch/local-engine/Common/CHUtil.cpp
index fa6124cf011f..2dd5f67687db 100644
--- a/cpp-ch/local-engine/Common/CHUtil.cpp
+++ b/cpp-ch/local-engine/Common/CHUtil.cpp
@@ -894,6 +894,9 @@ void BackendInitializerUtil::init(std::string * plan)
                 cleanup_threads,
                 0, // We don't need any threads one all the parts will be deleted
                 cleanup_threads);
+
+            // Avoid using LD_PRELOAD in child process
+            unsetenv("LD_PRELOAD");
         });
 }