diff --git a/tests/TestSegDist.cpp b/tests/TestSegDist.cpp
index c659abaf..8af0f242 100644
--- a/tests/TestSegDist.cpp
+++ b/tests/TestSegDist.cpp
@@ -10,6 +10,7 @@
 #include <iostream>
 #include <fstream>
 #include <Array.h>
+#include <Domain.h>
 
 int main(int argc, char **argv)
 {