diff --git a/src/fst/fst_ctrl_iface.c b/src/fst/fst_ctrl_iface.c
index c06a09b3d..8fe8fb299 100644
--- a/src/fst/fst_ctrl_iface.c
+++ b/src/fst/fst_ctrl_iface.c
@@ -561,7 +561,6 @@ static int get_peer_mbies(const char *params, char *buf, size_t buflen)
 	struct fst_group *g;
 	struct fst_iface *iface = NULL;
 	struct wpabuf *mbies;
-	int ret;
 
 	if (fst_read_next_text_param(params, ifname, sizeof(ifname), &endp) ||
 	    !*ifname)
@@ -584,11 +583,8 @@ static int get_peer_mbies(const char *params, char *buf, size_t buflen)
 	if (!mbies)
 		goto problem;
 
-	ret = print_mb_ies(mbies, buf, buflen);
-	if ((size_t) ret != wpabuf_len(mbies) * 2)
-		fst_printf(MSG_WARNING, "MB IEs copied only partially");
-
-	return ret;
+	return wpa_snprintf_hex(buf, buflen, wpabuf_head(mbies),
+				wpabuf_len(mbies));
 
 problem:
 	return os_snprintf(buf, buflen, "FAIL\n");
@@ -648,25 +644,6 @@ static int list_groups(const char *cmd, char *buf, size_t buflen)
 }
 
 
-int print_mb_ies(struct wpabuf *mbies, char *buf, size_t buflen)
-{
-	const u8 *p = wpabuf_head(mbies);
-	size_t s = wpabuf_len(mbies);
-	int ret = 0;
-
-	while ((size_t) ret < buflen && s--) {
-		int res;
-
-		res = os_snprintf(buf + ret, buflen - ret, "%02x", *p++);
-		if (os_snprintf_error(buflen - ret, res))
-			break;
-		ret += res;
-	}
-
-	return ret;
-}
-
-
 static const char * band_freq(enum mb_band_id band)
 {
 	static const char *band_names[] = {
@@ -697,7 +674,9 @@ static int print_band(unsigned num, struct fst_iface *iface, const u8 *addr,
 	if (wpabuf) {
 		ret += os_snprintf(buf + ret, buflen - ret, "band%u_mb_ies=",
 				   num);
-		ret += print_mb_ies(wpabuf, buf + ret, buflen - ret);
+		ret += wpa_snprintf_hex(buf + ret, buflen - ret,
+					wpabuf_head(wpabuf),
+					wpabuf_len(wpabuf));
 		ret += os_snprintf(buf + ret, buflen - ret, "\n");
 	}
 	ret += os_snprintf(buf + ret, buflen - ret, "band%u_fst_group_id=%s\n",
diff --git a/src/fst/fst_ctrl_iface.h b/src/fst/fst_ctrl_iface.h
index c3b4873ee..4d0cd9fce 100644
--- a/src/fst/fst_ctrl_iface.h
+++ b/src/fst/fst_ctrl_iface.h
@@ -30,9 +30,6 @@ fst_ctrl_iface_mb_info(const u8 *addr, char *buf, size_t buflen)
 
 #endif /* CONFIG_FST */
 
-
-int print_mb_ies(struct wpabuf *mbies, char *buf, size_t buflen);
-
 int fst_read_next_int_param(const char *params, Boolean *valid, char **endp);
 int fst_read_next_text_param(const char *params, char *buf, size_t buflen,
 			     char **endp);
diff --git a/src/fst/fst_session.c b/src/fst/fst_session.c
index 609fc9a43..b2f77203a 100644
--- a/src/fst/fst_session.c
+++ b/src/fst/fst_session.c
@@ -1571,7 +1571,6 @@ int fst_test_req_get_local_mbies(const char *request, char *buf, size_t buflen)
 	char ifname[FST_MAX_COMMAND_WORD_NAME_LENGTH];
 	struct fst_group *g;
 	struct fst_iface *iface;
-	int ret;
 
 	if (fst_read_next_text_param(request, ifname, sizeof(ifname), &endp) ||
 	    !*ifname)
@@ -1583,10 +1582,8 @@ int fst_test_req_get_local_mbies(const char *request, char *buf, size_t buflen)
 	iface = fst_group_get_iface_by_name(g, ifname);
 	if (!iface || !iface->mb_ie)
 		goto problem;
-	ret = print_mb_ies(iface->mb_ie, buf, buflen);
-	if ((size_t) ret != wpabuf_len(iface->mb_ie) * 2)
-		fst_printf(MSG_WARNING, "MB IEs copied only partially");
-	return ret;
+	return wpa_snprintf_hex(buf, buflen, wpabuf_head(iface->mb_ie),
+				wpabuf_len(iface->mb_ie));
 
 problem:
 	return os_snprintf(buf, buflen, "FAIL\n");