diff --git a/src/util/gpuserver.cpp b/src/util/gpuserver.cpp
index 12b39ee86..09f533ada 100644
--- a/src/util/gpuserver.cpp
+++ b/src/util/gpuserver.cpp
@@ -9,6 +9,7 @@
 // #define HAVE_CUDA 1
 #ifdef HAVE_CUDA
 #include "GpuUtil.h"
+#include <thread>
 #endif
 
 #include <random>