diff --git a/src/tcp_rules.c b/src/tcp_rules.c
index c7bdddcca..31b36ad75 100644
--- a/src/tcp_rules.c
+++ b/src/tcp_rules.c
@@ -1105,6 +1105,12 @@ static int tcp_parse_tcp_rep(char **args, int section_type, struct proxy *curpx,
 		return -1;
 	}
 
+	if (curpx->mode != PR_MODE_TCP && curpx->mode != PR_MODE_HTTP) {
+		memprintf(err, "%s %s is not allowed because %s %s is not in TCP or HTTP mode",
+		          args[0], args[1], proxy_type_str(curpx), curpx->id);
+		return -1;
+	}
+
 	if (strcmp(args[1], "inspect-delay") == 0) {
 		if ((curpx == defpx && strlen(defpx->id) == 0) || !(curpx->cap & PR_CAP_BE)) {
 			memprintf(err, "%s %s is only allowed in 'backend' sections or 'defaults' section with a name",
@@ -1222,6 +1228,12 @@ static int tcp_parse_tcp_req(char **args, int section_type, struct proxy *curpx,
 		return -1;
 	}
 
+	if (curpx->mode != PR_MODE_TCP && curpx->mode != PR_MODE_HTTP) {
+		memprintf(err, "%s %s is not allowed because %s %s is not in TCP or HTTP mode",
+		          args[0], args[1], proxy_type_str(curpx), curpx->id);
+		return -1;
+	}
+
 	if (strcmp(args[1], "inspect-delay") == 0) {
 		if (curpx == defpx && strlen(defpx->id) == 0) {
 			memprintf(err, "%s %s is not allowed in anonymous 'defaults' sections",