diff --git a/AppKit/Themes/Aristo/ThemeDescriptors.j b/AppKit/Themes/Aristo/ThemeDescriptors.j
index eb89fefb8..ab74599f0 100755
--- a/AppKit/Themes/Aristo/ThemeDescriptors.j
+++ b/AppKit/Themes/Aristo/ThemeDescriptors.j
@@ -2788,7 +2788,7 @@ var themedButtonValues = nil,
 + (CPProgressIndicator)themedIndeterminateBarProgressIndicator
 {
     var progressBar = [[CPProgressIndicator alloc] initWithFrame:CGRectMake(0, 0, 75, 16)];
-    [progressBar setDoubleValue:30];
+    [progressBar setIndeterminate:YES];
 
     [self registerThemeValues:nil forView:progressBar inherit:themedIndeterminateProgressIndicator];
 
diff --git a/AppKit/Themes/Aristo2/ThemeDescriptors.j b/AppKit/Themes/Aristo2/ThemeDescriptors.j
index 14c652209..ea9c421e2 100644
--- a/AppKit/Themes/Aristo2/ThemeDescriptors.j
+++ b/AppKit/Themes/Aristo2/ThemeDescriptors.j
@@ -2498,7 +2498,7 @@ var themedButtonValues = nil,
 + (CPProgressIndicator)themedIndeterminateBarProgressIndicator
 {
     var progressBar = [[CPProgressIndicator alloc] initWithFrame:CGRectMake(0, 0, 75, 16)];
-    [progressBar setDoubleValue:30];
+    [progressBar setIndeterminate:YES];
 
     [self registerThemeValues:nil forView:progressBar inherit:themedIndeterminateProgressIndicator];