diff --git a/srcpkgs/mednafen/template b/srcpkgs/mednafen/template
index 549bcfa07fe..300514d4ba9 100644
--- a/srcpkgs/mednafen/template
+++ b/srcpkgs/mednafen/template
@@ -14,6 +14,9 @@ homepage="http://mednafen.sourceforge.net/"
 distfiles="https://mednafen.github.io/releases/files/mednafen-${version}.tar.xz"
 checksum=848136e4b98d5a949d7691f6596564b20d5720e7d766e93deedc7832bbee2a40
 
+CFLAGS="-D_FILE_OFFSET_BITS=64"
+CXXFLAGS="$CFLAGS"
+configure_args+=" ac_cv_sizeof_off_t=8"
 nopie=yes
 
 pre_build() {