diff --git a/src/experimental/AcousticSolverTest.cpp b/src/experimental/AcousticSolverTest.cpp
index 06b0382dea45741a25665907ba009cc7af311015..ef5d3a2d5cfdd5b3feca74ff30837d38dcf8747c 100644
--- a/src/experimental/AcousticSolverTest.cpp
+++ b/src/experimental/AcousticSolverTest.cpp
@@ -2,6 +2,7 @@
 #include <rang.hpp>
 
 #include <BlockPerfectGas.hpp>
+#include <fstream>
 
 typedef const double my_double;