a.diff

diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c
index a7be3a1a..f6f0ebda 100644
--- a/lib/libalpm/signing.c
+++ b/lib/libalpm/signing.c
@@ -614,6 +614,9 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
 	gpg_err = gpgme_data_new_from_stream(&filedata, file);
 	CHECK_ERR();
 
+	gpg_err = gpgme_data_set_flag(filedata, "io-buffer-size", "1048576");
+	CHECK_ERR();
+
 	/* next create data object for the signature */
 	if(base64_sig) {
 		/* memory-based, we loaded it from a sync DB */
@@ -631,6 +634,9 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
 	}
 	CHECK_ERR();
 
+	gpg_err = gpgme_data_set_flag(sigdata, "io-buffer-size", "1048576");
+	CHECK_ERR();
+
 	/* here's where the magic happens */
 	gpg_err = gpgme_op_verify(ctx, sigdata, filedata, NULL);
 	CHECK_ERR();