diff --git a/src/wps/wps_common.c b/src/wps/wps_common.c
index 2e34721..bcae1ba 100644
--- a/src/wps/wps_common.c
+++ b/src/wps/wps_common.c
@@ -654,6 +654,7 @@
 	pub = wpabuf_zeropad(pub, 192);
 	if (pub == NULL) {
 		wpabuf_free(priv);
+		dh5_free(dh_ctx);
 		return -1;
 	}
 	wpa_hexdump_buf(MSG_DEBUG, "WPS: Generated new DH pubkey", pub);