Fix MSVC compilation

diff --git a/src/ATC/atis.cxx b/src/ATC/atis.cxx
index 470cf41bbc93992e2dd9247678a786c6a3fa1764..02394167bf0525acbde7e1aaed76ec7c813707c0 100644 (file)
--- a/src/ATC/atis.cxx
+++ b/src/ATC/atis.cxx
@@ -26,6 +26,7 @@
 
 #include <iostream>
 
+#include <simgear/math/SGMath.hxx>
 #include "atis.hxx"
 
 FGAtisManager::FGAtisManager() {