diff --git a/lib/bcoin/http/rpc.js b/lib/bcoin/http/rpc.js
index df037814..f84528c4 100644
--- a/lib/bcoin/http/rpc.js
+++ b/lib/bcoin/http/rpc.js
@@ -1548,10 +1548,16 @@ RPC.prototype.signrawtransaction = function signrawtransaction(args, callback) {
   this.node.fillCoins(merged, function(err) {
     if (err)
       return callback(err);
+
     self.wallet.fillCoins(merged, function(err) {
       if (err)
         return callback(err);
-      self._signrawtransaction(merged, txs, args, callback);
+
+      try {
+        self._signrawtransaction(merged, txs, args, callback);
+      } catch (e) {
+        callback(e);
+      }
     });
   });
 };
@@ -1737,7 +1743,11 @@ RPC.prototype._createRedeem = function _createRedeem(args, callback) {
     if (err)
       return callback(err);
 
-    script = bcoin.script.fromMultisig(m, n, keys);
+    try {
+      script = bcoin.script.fromMultisig(m, n, keys);
+    } catch (e) {
+      return next(new RPCError('Invalid parameters.'));
+    }
 
     if (script.toRaw().length > constants.script.MAX_PUSH)
       return callback(new RPCError('Redeem script exceeds size limit.'));
@@ -2976,4 +2986,8 @@ function RPCError(msg) {
 
 utils.inherits(RPCError, Error);
 
+/*
+ * Expose
+ */
+
 module.exports = RPC;