diff --git a/SPECS/haproxy.spec b/SPECS/haproxy.spec
index cf3ed18..13173e7 100644
--- a/SPECS/haproxy.spec
+++ b/SPECS/haproxy.spec
@@ -85,6 +85,7 @@ availability environments. Indeed, it can:
   USE_RT=1 \
   USE_PCRE=1 \
   USE_PCRE_JIT=1 \
+  USE_LUA=1 \
   ADDINC="%{optflags}" \
   ADDLIB="%{__global_ldflags} -ljemalloc -lpthread"