diff --git a/sile.spec b/sile.spec
index 34ed626..957b9d7 100644
--- a/sile.spec
+++ b/sile.spec
@@ -176,7 +176,7 @@ unset LIBSSH2_SYS_USE_PKG_CONFIG
 export RUSTFLAGS=" -Clink-arg=-Wl,-z,relro,-z,now -C debuginfo=2 -C incremental=false -C strip=none"
 export CARGO_AUDITABLE=auditable
 export CARGO_FEATURE_VENDORED=1
-export LUA_INCLUDE="-I/usr/include/luajit-5_1-2.1"
+export LUA_INCLUDE="$(pkg-config --cflags-only-I luajit)"
 export CFLAGS="%optflags $(pkg-config --cflags-only-I luajit)"
 export CXXFLAGS="%optflags $(pkg-config --cflags-only-I luajit)"
 %configure \