diff --git a/res/themes/legacy-light/css/_legacy-light.scss b/res/themes/legacy-light/css/_legacy-light.scss
index e945efb219..1a63c9bd07 100644
--- a/res/themes/legacy-light/css/_legacy-light.scss
+++ b/res/themes/legacy-light/css/_legacy-light.scss
@@ -8,9 +8,9 @@
 /* Noto Color Emoji contains digits, in fixed-width, therefore causing
    digits in flowed text to stand out.
    TODO: Consider putting all emoji fonts to the end rather than the front. */
-$font-family: 'Nunito', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Arial', 'Helvetica', 'Sans-Serif', 'Noto Color Emoji';
+$font-family: 'Nunito', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Arial', 'Helvetica', sans-serif, 'Noto Color Emoji';
 
-$monospace-font-family: 'Inconsolata', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Courier', 'monospace', 'Noto Color Emoji';
+$monospace-font-family: 'Inconsolata', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Courier', monospace, 'Noto Color Emoji';
 
 // Colors from Figma Compound https://www.figma.com/file/X4XTH9iS2KGJ2wFKDqkyed/Compound?node-id=557%3A0
 $system-light: #F4F6FA;
diff --git a/res/themes/light/css/_light.scss b/res/themes/light/css/_light.scss
index aa17dddc56..eff9abe5af 100644
--- a/res/themes/light/css/_light.scss
+++ b/res/themes/light/css/_light.scss
@@ -8,9 +8,9 @@
 /* Noto Color Emoji contains digits, in fixed-width, therefore causing
    digits in flowed text to stand out.
    TODO: Consider putting all emoji fonts to the end rather than the front. */
-$font-family: 'Inter', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Arial', 'Helvetica', 'Sans-Serif', 'Noto Color Emoji';
+$font-family: 'Inter', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Arial', 'Helvetica', sans-serif, 'Noto Color Emoji';
 
-$monospace-font-family: 'Inconsolata', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Courier', 'monospace', 'Noto Color Emoji';
+$monospace-font-family: 'Inconsolata', 'Twemoji', 'Apple Color Emoji', 'Segoe UI Emoji', 'Courier', monospace, 'Noto Color Emoji';
 
 // Colors from Figma Compound https://www.figma.com/file/X4XTH9iS2KGJ2wFKDqkyed/Compound?node-id=557%3A0
 $system-light: #F4F6FA;