diff --git a/src/libstrongswan/plugins/gcm/gcm_aead.c b/src/libstrongswan/plugins/gcm/gcm_aead.c
index d9ef397b4..f85e3167e 100644
--- a/src/libstrongswan/plugins/gcm/gcm_aead.c
+++ b/src/libstrongswan/plugins/gcm/gcm_aead.c
@@ -370,6 +370,8 @@ METHOD(aead_t, destroy, void,
 {
 	this->crypter->destroy(this->crypter);
 	this->iv_gen->destroy(this->iv_gen);
+	memwipe(this->salt, sizeof(this->salt));
+	memwipe(this->h, sizeof(this->h));
 	free(this);
 }