diff --git a/userspace/falco/webserver.h b/userspace/falco/webserver.h
index be0b8372..e9c40967 100644
--- a/userspace/falco/webserver.h
+++ b/userspace/falco/webserver.h
@@ -16,6 +16,7 @@ limitations under the License.
 #pragma once
 
 #define CPPHTTPLIB_OPENSSL_SUPPORT
+#define CPPHTTPLIB_ZLIB_SUPPORT
 #include <httplib.h>
 #include <thread>
 #include "configuration.h"