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-rw-r--r--src/aircraft_cmd.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp
index ee89fbf0d..2f49158eb 100644
--- a/src/aircraft_cmd.cpp
+++ b/src/aircraft_cmd.cpp
@@ -39,6 +39,8 @@
#include "table/strings.h"
+#include "safeguards.h"
+
static const int ROTOR_Z_OFFSET = 5; ///< Z Offset between helicopter- and rotorsprite.
static const int PLANE_HOLDING_ALTITUDE = 150; ///< Altitude of planes in holding pattern (= lowest flight altitude).