diff --git a/test/functional/rpc_rawtransaction.py b/test/functional/rpc_rawtransaction.py
index 3978c80ddee..3eccc904b7e 100755
--- a/test/functional/rpc_rawtransaction.py
+++ b/test/functional/rpc_rawtransaction.py
@@ -585,6 +585,8 @@ class RawTransactionsTest(BitcoinTestFramework):
         rawTxPartialSigned2 = self.nodes[2].signrawtransactionwithwallet(rawTx2, inputs)
         self.log.debug(rawTxPartialSigned2)
         assert_equal(rawTxPartialSigned2['complete'], False)  # node2 only has one key, can't comp. sign the tx
+        assert_raises_rpc_error(-22, "TX decode failed", self.nodes[0].combinerawtransaction, [rawTxPartialSigned1['hex'], rawTxPartialSigned2['hex'] + "00"])
+        assert_raises_rpc_error(-22, "Missing transactions", self.nodes[0].combinerawtransaction, [])
         rawTxComb = self.nodes[2].combinerawtransaction([rawTxPartialSigned1['hex'], rawTxPartialSigned2['hex']])
         self.log.debug(rawTxComb)
         self.nodes[2].sendrawtransaction(rawTxComb)
@@ -592,6 +594,7 @@ class RawTransactionsTest(BitcoinTestFramework):
         self.sync_all()
         self.generate(self.nodes[0], 1)
         assert_equal(self.nodes[0].getbalance(), bal + Decimal('50.00000000') + Decimal('2.19000000'))  # block reward + tx
+        assert_raises_rpc_error(-25, "Input not found or already spent", self.nodes[0].combinerawtransaction, [rawTxPartialSigned1['hex'], rawTxPartialSigned2['hex']])
 
 
 if __name__ == '__main__':