diff --git a/src/vm/jvm/runtime/org/perl6/nqp/runtime/ArgsExpectation.java b/src/vm/jvm/runtime/org/perl6/nqp/runtime/ArgsExpectation.java
index 59a320516b..e7d2266dce 100644
--- a/src/vm/jvm/runtime/org/perl6/nqp/runtime/ArgsExpectation.java
+++ b/src/vm/jvm/runtime/org/perl6/nqp/runtime/ArgsExpectation.java
@@ -28,7 +28,8 @@ public static void invokeByExpectation(ThreadContext tc, CodeRef cr,
                 if (csd.argFlags.length != 0)
                     ExceptionHandling.dieInternal(tc,
                         "Wrong number of arguments passed; expected 0..0, but got " +
-                        csd.numPositionals);
+                        csd.argFlags.length +
+                        " (" + csd.numPositionals + " of those positional)");
             }
             cr.staticInfo.mh.invokeExact(tc, cr, csd);
             break;
@@ -63,13 +64,15 @@ public static void invokeByExpectation(ThreadContext tc, CodeRef cr,
                     default:
                         ExceptionHandling.dieInternal(tc,
                             "Wrong number of arguments passed; expected 1..1, but got " +
-                            csd.numPositionals);
+                            csd.argFlags.length +
+                            " (" + csd.numPositionals + " of those positional)");
                     }
                 }
                 else {
                     ExceptionHandling.dieInternal(tc,
                         "Wrong number of arguments passed; expected 1..1, but got " +
-                        csd.numPositionals);
+                        csd.argFlags.length +
+                        " (" + csd.numPositionals + " of those positional)");
                 }
             }
             break;
@@ -105,7 +108,8 @@ public static void invokeByExpectation(ThreadContext tc, CodeRef cr,
                     default:
                         ExceptionHandling.dieInternal(tc,
                             "Wrong number of arguments passed; expected 2..2, but got " +
-                            csd.numPositionals);
+                            csd.argFlags.length +
+                            " (" + csd.numPositionals + " of those positional)");
                     }
                     switch (csd.argFlags[1]) {
                     case CallSiteDescriptor.ARG_OBJ:
@@ -123,14 +127,16 @@ public static void invokeByExpectation(ThreadContext tc, CodeRef cr,
                     default:
                         ExceptionHandling.dieInternal(tc,
                             "Wrong number of arguments passed; expected 2..2, but got " +
-                            csd.numPositionals);
+                            csd.argFlags.length +
+                            " (" + csd.numPositionals + " of those positional)");
                     }
                     cr.staticInfo.mh.invokeExact(tc, cr, csd, arg1, arg2);
                 }
                 else {
                     ExceptionHandling.dieInternal(tc,
                         "Wrong number of arguments passed; expected 2..2, but got " +
-                        csd.numPositionals);
+                        csd.argFlags.length +
+                        " (" + csd.numPositionals + " of those positional)");
                 }
             }
             break;
diff --git a/src/vm/jvm/runtime/org/perl6/nqp/runtime/CallSiteDescriptor.java b/src/vm/jvm/runtime/org/perl6/nqp/runtime/CallSiteDescriptor.java
index 2177957927..41b403068c 100644
--- a/src/vm/jvm/runtime/org/perl6/nqp/runtime/CallSiteDescriptor.java
+++ b/src/vm/jvm/runtime/org/perl6/nqp/runtime/CallSiteDescriptor.java
@@ -87,7 +87,7 @@ public CallSiteDescriptor(byte[] flags, String[] names) {
                 hasFlattening = true;
                 break;
             default:
-                new RuntimeException("Unhandld argument flag: " + af);
+                new RuntimeException("Unhandled argument flag: " + af);
             }
         }
     }