diff --git a/src/material-experimental/mdc-progress-spinner/progress-spinner.scss b/src/material-experimental/mdc-progress-spinner/progress-spinner.scss
index 27748a36dcd5..8b5faf02374c 100644
--- a/src/material-experimental/mdc-progress-spinner/progress-spinner.scss
+++ b/src/material-experimental/mdc-progress-spinner/progress-spinner.scss
@@ -4,6 +4,9 @@
 @include mdc-circular-progress-core-styles($query: $mat-base-styles-query);
 
 .mat-mdc-progress-spinner {
+  // Explicitly set to `block` since the browser defaults custom elements to `inline`.
+  display: block;
+
   // Prevents the spinning of the inner element from affecting layout outside of the spinner.
   overflow: hidden;