diff --git a/bfps/cpp/fftw_tools.hpp b/bfps/cpp/fftw_tools.hpp
index 52d80f256402c1383e699d433766bc8019d3c46c..b41cd2a453c2c0aa34f56febb17f2a650a2a9685 100644
--- a/bfps/cpp/fftw_tools.hpp
+++ b/bfps/cpp/fftw_tools.hpp
@@ -26,6 +26,7 @@
 
 #include <mpi.h>
 #include <fftw3-mpi.h>
+#include <map>
 
 #ifndef FFTW_TOOLS