diff --git a/src/material/progress-bar/_m2-progress-bar.scss b/src/material/progress-bar/_m2-progress-bar.scss
index 7308b9e6f036..775cadc82e78 100644
--- a/src/material/progress-bar/_m2-progress-bar.scss
+++ b/src/material/progress-bar/_m2-progress-bar.scss
@@ -9,6 +9,7 @@
 
   @return (
     base: (
+      progress-bar-active-indicator-shape: 0,
       progress-bar-active-indicator-height: 4px,
       progress-bar-track-height: 4px,
       progress-bar-track-shape: 0,
diff --git a/src/material/progress-bar/_m3-progress-bar.scss b/src/material/progress-bar/_m3-progress-bar.scss
index efc7512ebed5..2876070d17d5 100644
--- a/src/material/progress-bar/_m3-progress-bar.scss
+++ b/src/material/progress-bar/_m3-progress-bar.scss
@@ -15,6 +15,7 @@ $prefix: (mat, progress-bar);
 
   @return (
     base: (
+      progress-bar-active-indicator-shape: map.get($system, corner-none),
       progress-bar-active-indicator-height: 4px,
       progress-bar-track-height: 4px,
       progress-bar-track-shape: map.get($system, corner-none)
diff --git a/src/material/progress-bar/progress-bar.scss b/src/material/progress-bar/progress-bar.scss
index d5bf593c296f..af1ed431d7f3 100644
--- a/src/material/progress-bar/progress-bar.scss
+++ b/src/material/progress-bar/progress-bar.scss
@@ -50,6 +50,7 @@ $fallbacks: m3-progress-bar.get-tokens();
   overflow-x: hidden;
   transition: opacity 250ms 0ms cubic-bezier(0.4, 0, 0.6, 1);
 
+  border-radius: token-utils.slot(progress-bar-active-indicator-shape, $fallbacks);
   $track-variable: token-utils.slot(progress-bar-track-height, $fallbacks);
   $indicator-height-variable: token-utils.slot(progress-bar-active-indicator-height, $fallbacks);
   height: max(#{$track-variable}, #{$indicator-height-variable});