diff --git a/libcli/smb/smb2_negotiate_context.h b/libcli/smb/smb2_negotiate_context.h
index 6f7a21a1f3b..1e2e3e8f17d 100644
--- a/libcli/smb/smb2_negotiate_context.h
+++ b/libcli/smb/smb2_negotiate_context.h
@@ -55,8 +55,14 @@ struct smb2_negotiate_context *smb2_negotiate_context_find(const struct smb2_neg
 							   uint16_t type);
 #define WINDOWS_CLIENT_PURE_SMB2_NEGPROT_INITIAL_CREDIT_ASK	31
 
+struct smb3_encryption_capabilities {
+#define SMB3_ENCRYTION_CAPABILITIES_MAX_ALGOS 2
+	uint16_t num_algos;
+	uint16_t algos[SMB3_ENCRYTION_CAPABILITIES_MAX_ALGOS];
+};
+
 struct smb311_capabilities {
-	uint8_t dummy;
+	struct smb3_encryption_capabilities encryption;
 };
 
 #endif /* _LIBCLI_SMB_SMB2_NEGOTIATE_BLOB_H_ */