diff --git a/src/libcharon/plugins/save_keys/save_keys_listener.c b/src/libcharon/plugins/save_keys/save_keys_listener.c
index 60b75fdea..1c949b6b1 100644
--- a/src/libcharon/plugins/save_keys/save_keys_listener.c
+++ b/src/libcharon/plugins/save_keys/save_keys_listener.c
@@ -264,7 +264,7 @@ static inline void esp_names(proposal_t *proposal, const char **enc,
 				len = 64;
 				break;
 			case ENCR_AES_GCM_ICV12:
-				len = 64;
+				len = 96;
 				break;
 			case ENCR_AES_GCM_ICV16:
 				len = 128;