diff --git a/src/flt_http_comp.c b/src/flt_http_comp.c
index d34b56a86d..becfa52785 100644
--- a/src/flt_http_comp.c
+++ b/src/flt_http_comp.c
@@ -789,6 +789,12 @@ parse_compression_options(char **args, int section, struct proxy *proxy,
 	else
 		comp = proxy->comp;
 
+	if (proxy->mode != PR_MODE_TCP && proxy->mode != PR_MODE_HTTP) {
+		memprintf(err, "parsing [%s:%d] : '%s' requires TCP or HTTP mode.",
+			  file, line, args[0]);
+		ret = -1;
+		goto end;
+	}
 	if (strcmp(args[1], "algo") == 0 || strcmp(args[1], "algo-res") == 0) {
 		struct comp_ctx *ctx;
 		int              cur_arg = 2;