diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 92b0158b..d30bef49 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -366,7 +366,7 @@ getJasmineRequireObj().Spec = function(j$) {
   Spec.pendingSpecExceptionMessage = "=> marked Pending";
 
   Spec.isPendingSpecException = function(e) {
-    return e.toString().indexOf(Spec.pendingSpecExceptionMessage) !== -1;
+    return !!(e && e.toString && e.toString().indexOf(Spec.pendingSpecExceptionMessage) !== -1);
   };
 
   return Spec;
diff --git a/spec/core/SpecSpec.js b/spec/core/SpecSpec.js
index b0186dee..b1d67fe1 100644
--- a/spec/core/SpecSpec.js
+++ b/spec/core/SpecSpec.js
@@ -20,6 +20,10 @@ describe("Spec", function() {
     expect(j$.Spec.isPendingSpecException(e)).toBe(false);
   });
 
+  it("#isPendingSpecException returns false for thrown values that don't have toString", function() {
+    expect(j$.Spec.isPendingSpecException(void 0)).toBe(false);
+  });
+
   it("delegates execution to a QueueRunner", function() {
     var fakeQueueRunner = jasmine.createSpy('fakeQueueRunner'),
       spec = new j$.Spec({
diff --git a/src/core/Spec.js b/src/core/Spec.js
index e8f48539..462a0f02 100644
--- a/src/core/Spec.js
+++ b/src/core/Spec.js
@@ -141,7 +141,7 @@ getJasmineRequireObj().Spec = function(j$) {
   Spec.pendingSpecExceptionMessage = "=> marked Pending";
 
   Spec.isPendingSpecException = function(e) {
-    return e.toString().indexOf(Spec.pendingSpecExceptionMessage) !== -1;
+    return !!(e && e.toString && e.toString().indexOf(Spec.pendingSpecExceptionMessage) !== -1);
   };
 
   return Spec;