diff --git a/src/haproxy.c b/src/haproxy.c
index c40813b..728c8e5 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -109,6 +109,7 @@
 #include <proto/signal.h>
 #include <proto/task.h>
 #include <proto/dns.h>
+#include <proto/vars.h>
 
 #ifdef USE_OPENSSL
 #include <proto/ssl_sock.h>
@@ -734,6 +735,9 @@
 	/* Initialise lua. */
 	hlua_init();
 
+	/* Initialize process vars */
+	vars_init(&global.vars, SCOPE_PROC);
+
 	global.tune.options |= GTUNE_USE_SELECT;  /* select() is always available */
 #if defined(ENABLE_POLL)
 	global.tune.options |= GTUNE_USE_POLL;
@@ -1675,6 +1679,8 @@
 		free(wl);
 	}
 
+	vars_prune(&global.vars, NULL, NULL);
+
 	pool_destroy2(pool2_stream);
 	pool_destroy2(pool2_session);
 	pool_destroy2(pool2_connection);