diff --git a/src/framework/core/js/Fluid.js b/src/framework/core/js/Fluid.js
index efab8d2838..ce31e09225 100644
--- a/src/framework/core/js/Fluid.js
+++ b/src/framework/core/js/Fluid.js
@@ -1122,7 +1122,7 @@ var fluid = fluid || fluid_2_0;
         var type = segs[0];
         var lookup = fluid.priorityTypes[type];
         if (lookup === undefined) {
-            fluid.fail("Invalid priority constraint type in constraint " + constraint + ": the only supported values are " + fluid.keys(fluid.priorityType).join(", "));
+            fluid.fail("Invalid priority constraint type in constraint " + constraint + ": the only supported values are " + fluid.keys(fluid.priorityTypes).join(", ") + " or numeric");
         }
         if (fixedOnly && lookup === 0) {
             fluid.fail("Constraint-based priority in constraint " + constraint + " is not supported in a " + site + " record - you must use either a numeric value or first, last");
diff --git a/tests/framework-tests/core/js/FluidIoCTests.js b/tests/framework-tests/core/js/FluidIoCTests.js
index e699868a17..6ccc7db67d 100644
--- a/tests/framework-tests/core/js/FluidIoCTests.js
+++ b/tests/framework-tests/core/js/FluidIoCTests.js
@@ -2049,6 +2049,25 @@ https://github.com/fluid-project/infusion/raw/master/Infusion-LICENSE.txt
         jqUnit.assertDeepEq("Children constructed in sort order", [1, 2, 3, 4], testComp.constructRecord);
     });
 
+    fluid.defaults("fluid.tests.FLUID5762test", {
+        gradeNames: "fluid.component",
+        events: {
+            thing: null
+        },
+        listeners: {
+            thing: {
+                funcName: "fluid.identity",
+                priority: "10"
+            }
+        }
+    });
+    
+    jqUnit.test("FLUID-5762: Helpful diagnostic on faulty priority", function () {
+        jqUnit.expectFrameworkDiagnostic("Got framework diagnostic from faulty priority", function () {
+            fluid.tests.FLUID5762test();
+        }, ["last", "numeric"]);
+    });
+
     /** Tree circularity tests (early detection of stack overflow) **/
 
     fluid.defaults("fluid.tests.circularEvent", {