diff --git a/tests/char_volume_test.cpp b/tests/char_volume_test.cpp
index 8c5d50b861e75..82cca754a9494 100644
--- a/tests/char_volume_test.cpp
+++ b/tests/char_volume_test.cpp
@@ -9,7 +9,6 @@
 #include "map_helpers.h"
 #include "mutation.h"
 #include "player_helpers.h"
-#include "units.h"
 #include "vehicle.h"
 #include "veh_type.h"