diff --git a/srcpkgs/simgear/template b/srcpkgs/simgear/template
index aaae2735956..fe78247de3c 100644
--- a/srcpkgs/simgear/template
+++ b/srcpkgs/simgear/template
@@ -1,7 +1,7 @@
 # Template file for 'simgear'
 pkgname=simgear
 version=2020.3.17
-revision=2
+revision=3
 # XXX: always keep in sync with flightgear version!
 build_style=cmake
 configure_args="-DENABLE_TESTS=OFF -DOpenGL_GL_PREFERENCE=GLVND
@@ -16,6 +16,7 @@ license="GPL-2.0-or-later"
 homepage="https://www.flightgear.org/"
 distfiles="$SOURCEFORGE_SITE/project/flightgear/release-${version%.*}/${pkgname}-${version}.tar.bz2"
 checksum=4c5e9cd0dcff1bd311c2460aa601230bd80abdbaec751b559c1d7147749f377c
+CXXFLAGS=" -D_LARGE_FILE_SOURCE=1 -D_FILE_OFFSET_BITS=64"
 
 simgear-devel_package() {
 	depends="simgear>=${version}_${revision}"