diff --git a/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/instance/defaultEndTime.st b/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/instance/defaultEndTime.st
index bb7cff3..f5b818f 100644
--- a/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/instance/defaultEndTime.st
+++ b/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/instance/defaultEndTime.st
@@ -1,3 +1,3 @@
 defaults
 defaultEndTime
-	^ 1000.
\ No newline at end of file
+	^ 0.
\ No newline at end of file
diff --git a/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/methodProperties.json b/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/methodProperties.json
index fdc3748..5c003f8 100644
--- a/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/methodProperties.json
+++ b/packages/AnimationsEditor-Core.package/AnimationsEditorPropertyStartEnd.class/methodProperties.json
@@ -12,7 +12,7 @@
 		"buildStartInputWith:" : "FH 8/1/2021 19:30",
 		"buildUIWith:" : "FH 8/1/2021 19:30",
 		"canRenderUI" : "DM 8/6/2020 10:11",
-		"defaultEndTime" : "mjs 8/1/2021 13:45",
+		"defaultEndTime" : "NR 7/18/2022 10:28",
 		"defaultStartTime" : "DM 8/6/2020 10:37",
 		"endTime" : "FH 8/1/2021 19:29",
 		"endTime:" : "FH 8/1/2021 19:29",
diff --git a/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/minimumExtent.st b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/minimumExtent.st
new file mode 100644
index 0000000..6f9b121
--- /dev/null
+++ b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/minimumExtent.st
@@ -0,0 +1,4 @@
+constants
+minimumExtent
+
+	^ 1000.
\ No newline at end of file
diff --git a/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/updateExtent.st b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/updateExtent.st
index db13d8b..c751dc7 100644
--- a/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/updateExtent.st
+++ b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/instance/updateExtent.st
@@ -3,7 +3,7 @@ updateExtent
 	| normalHeight fullWidth |
 
 	normalHeight := self scrollPane height - self borderWidth.
-	fullWidth := self endTime + self startMargin + self endMargin.
+	fullWidth := (self endTime max: self minimumExtent) + self startMargin + self endMargin.
 	self width: fullWidth.
 	fullWidth > self scrollPane width 
 		ifTrue: [self height: normalHeight - self scrollPane scrollBarThickness.] 
diff --git a/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/methodProperties.json b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/methodProperties.json
index 1b311fd..069f43a 100644
--- a/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/methodProperties.json
+++ b/packages/AnimationsEditor-Core.package/AnimationsEditorTimeline.class/methodProperties.json
@@ -16,6 +16,7 @@
 		"initialExtent" : "MH 8/1/2021 18:57",
 		"initialize" : "SG 5/21/2022 15:43",
 		"initializeStartEndTime" : "mjs 7/31/2021 17:38",
+		"minimumExtent" : "NR 7/18/2022 10:43",
 		"movingLine" : "SG 5/21/2022 15:38",
 		"movingLine:" : "SG 5/21/2022 15:38",
 		"property" : "MH 8/1/2021 18:57",
@@ -29,5 +30,5 @@
 		"timebar:" : "MH 8/1/2021 18:57",
 		"trackHeight" : "MH 8/1/2021 18:57",
 		"update:" : "SG 5/23/2022 18:40",
-		"updateExtent" : "MH 8/1/2021 18:58",
+		"updateExtent" : "NR 7/18/2022 10:41",
 		"updateStartEndProperty" : "6/17/2022 14:09:28" } }