diff --git a/src/shogun/base/Parallel.cpp b/src/shogun/base/Parallel.cpp
index ad12280fa..a34a24706 100644
--- a/src/shogun/base/Parallel.cpp
+++ b/src/shogun/base/Parallel.cpp
@@ -9,6 +9,7 @@
 #include <shogun/lib/RefCount.h>
 #include <shogun/lib/config.h>
 #include <shogun/lib/memory.h>
+#include <shogun/io/SGIO.h>
 
 #include <thread>