diff --git a/bind/bind.go b/bind/bind.go
index 5f70604..757bf67 100644
--- a/bind/bind.go
+++ b/bind/bind.go
@@ -145,7 +145,7 @@ type Gauge struct {
 type Task struct {
 	ID         string `xml:"id"`
 	Name       string `xml:"name"`
-	Quantum    uint64 `xml:"quantum"`
+	Quantum    int64  `xml:"quantum"`
 	References uint64 `xml:"references"`
 	State      string `xml:"state"`
 }
diff --git a/fixtures/v2.xml b/fixtures/v2.xml
index b58a84d..5736b1a 100644
--- a/fixtures/v2.xml
+++ b/fixtures/v2.xml
@@ -1616,7 +1616,7 @@
             <references>2</references>
             <id>0x7f989b7cd0c0</id>
             <state>idle</state>
-            <quantum>1</quantum>
+            <quantum>-1</quantum>
           </task>
         </tasks>
       </taskmgr>
diff --git a/fixtures/v3/tasks b/fixtures/v3/tasks
index d6ef04b..ef9e702 100644
--- a/fixtures/v3/tasks
+++ b/fixtures/v3/tasks
@@ -30,7 +30,7 @@
         <references>5</references>
         <id>0x7febdb4790d0</id>
         <state>idle</state>
-        <quantum>1</quantum>
+        <quantum>-1</quantum>
         <events>0</events>
       </task>
       <task>