X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FGUI%2Flayout-props.cxx;h=09764096ca0f2cfc0ec26afda7f0e3ca074d4aec;hb=1ae2b59333dc914d10bcc726bc94e71cbf3e411e;hp=2d691036fae35047df8c763f14d20937fbcb474b;hpb=aedc6f0614bf20170be35f899ac176666a87215e;p=flightgear.git

diff --git a/src/GUI/layout-props.cxx b/src/GUI/layout-props.cxx
index 2d691036f..09764096c 100644
--- a/src/GUI/layout-props.cxx
+++ b/src/GUI/layout-props.cxx
@@ -4,6 +4,7 @@
 
 #include <plib/pu.h>
 #include <simgear/props/props.hxx>
+#include <simgear/math/SGMath.hxx>
 
 #include "layout.hxx"