diff --git a/glade/add-process-dialog.glade b/glade/add-process-dialog.glade
index b80de7b..838aad1 100644
--- a/glade/add-process-dialog.glade
+++ b/glade/add-process-dialog.glade
@@ -192,7 +192,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">0 0 inf 1 0 0</property>
+	      <property name="adjustment">0 0 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
@@ -213,7 +213,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">0 0 inf 1 0 0</property>
+	      <property name="adjustment">0 0 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
diff --git a/glade/add-request-dialog.glade b/glade/add-request-dialog.glade
index 9021f41..554915c 100644
--- a/glade/add-request-dialog.glade
+++ b/glade/add-request-dialog.glade
@@ -114,7 +114,7 @@
 		  <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 		  <property name="snap_to_ticks">False</property>
 		  <property name="wrap">False</property>
-		  <property name="adjustment">0 0 inf 1 0 0</property>
+		  <property name="adjustment">0 0 65536 1 0 0</property>
 		</widget>
 		<packing>
 		  <property name="padding">0</property>
@@ -236,7 +236,7 @@
 		  <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 		  <property name="snap_to_ticks">False</property>
 		  <property name="wrap">False</property>
-		  <property name="adjustment">1 1 inf 1 0 0</property>
+		  <property name="adjustment">1 1 65536 1 0 0</property>
 		</widget>
 		<packing>
 		  <property name="left_attach">1</property>
diff --git a/glade/add-resource-dialog.glade b/glade/add-resource-dialog.glade
index 3533e55..f1b78bf 100644
--- a/glade/add-resource-dialog.glade
+++ b/glade/add-resource-dialog.glade
@@ -86,7 +86,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">1 1 inf 1 0 0</property>
+	      <property name="adjustment">1 1 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
diff --git a/glade/add-thread-dialog.glade b/glade/add-thread-dialog.glade
index 57332bb..6b53895 100644
--- a/glade/add-thread-dialog.glade
+++ b/glade/add-thread-dialog.glade
@@ -86,7 +86,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">0 0 inf 1 0 0</property>
+	      <property name="adjustment">0 0 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
@@ -107,7 +107,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">0 0 inf 1 0 0</property>
+	      <property name="adjustment">0 0 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
@@ -128,7 +128,7 @@
 	      <property name="update_policy">GTK_UPDATE_ALWAYS</property>
 	      <property name="snap_to_ticks">False</property>
 	      <property name="wrap">False</property>
-	      <property name="adjustment">1 1 inf 1 0 0</property>
+	      <property name="adjustment">1 1 65536 1 0 0</property>
 	    </widget>
 	    <packing>
 	      <property name="left_attach">1</property>
diff --git a/glade/main-window.glade b/glade/main-window.glade
index 5ea3f33..af1ac93 100644
--- a/glade/main-window.glade
+++ b/glade/main-window.glade
@@ -442,7 +442,7 @@
               <widget class="GtkSpinButton" id="BottomHBox.JumpToSpin">
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
-                <property name="adjustment">0 0 inf 1 10 10</property>
+                <property name="adjustment">0 0 65536 1 10 10</property>
                 <property name="climb_rate">1</property>
               </widget>
               <packing>
diff --git a/src/jump_to_dialog.cc b/src/jump_to_dialog.cc
index 62e7a42..afa2dff 100644
--- a/src/jump_to_dialog.cc
+++ b/src/jump_to_dialog.cc
@@ -76,8 +76,6 @@ JumpToDialog::start()
   show();
   _progress->set_fraction(0.0);
   
-  assert(_target_instant >= 0);
-
   Simulation& sim = Simulation::get_instance();
   History&    h   = sim.get_history();