diff --git a/Jenkinsfile b/Jenkinsfile
index 02305ed7e..1d25e47c2 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -4,7 +4,7 @@ pipeline {
     agent none
 
     environment {
-        ReleaseNumber = '1.9.0'
+        ReleaseNumber = '1.9.1'
         outputEnc = '65001'
     }
 
diff --git a/src/ScriptEngine.HostedScript/Library/Reflector.cs b/src/ScriptEngine.HostedScript/Library/Reflector.cs
index 557865d3d..6bcce0eea 100644
--- a/src/ScriptEngine.HostedScript/Library/Reflector.cs
+++ b/src/ScriptEngine.HostedScript/Library/Reflector.cs
@@ -40,7 +40,10 @@ public IValue CallMethod(IRuntimeContextInstance target, string methodName, Arra
             var methodIdx = target.FindMethod(methodName);
             var methInfo = target.GetMethodInfo(methodIdx);
 
-            var argsToPass = GetArgsToPass(arguments, methInfo);
+            var argValues = arguments?.ToArray() ?? Array.Empty<IValue>();
+            // ArrayImpl не может (не должен!) содержать null или NotAValidValue
+
+            var argsToPass = target.DynamicMethodSignatures ? argValues : GetArgsToPass(argValues, methInfo);
 
             IValue retValue = ValueFactory.Create();
             if (methInfo.IsFunction)
@@ -66,11 +69,8 @@ public IValue CallMethod(IRuntimeContextInstance target, string methodName, Arra
             return retValue;
         }
 
-        private static IValue[] GetArgsToPass(ArrayImpl arguments, MethodInfo methInfo)
+        private static IValue[] GetArgsToPass(IValue[] argValues, MethodInfo methInfo)
         {
-            var argValues = arguments?.ToArray() ?? Array.Empty<IValue>();
-            // ArrayImpl не может (не должен!) содержать null или NotAValidValue
-
             var methArgCount = methInfo.ArgCount;
             if (argValues.Length > methArgCount)
                 throw RuntimeException.TooManyArgumentsPassed();