diff --git a/app/src/assets/scss/component/_button.scss b/app/src/assets/scss/component/_button.scss
index ff649a6c2..2340dd227 100644
--- a/app/src/assets/scss/component/_button.scss
+++ b/app/src/assets/scss/component/_button.scss
@@ -76,7 +76,7 @@
 
   &--outline {
     color: var(--b3-theme-primary);
-    box-shadow: inset 0 0 0 1px var(--b3-theme-primary);
+    box-shadow: inset 0 0 0 .4px var(--b3-theme-primary);
     background-color: transparent;
 
     &:hover,