diff --git a/packages/frontend/src/style.scss b/packages/frontend/src/style.scss
index 52f8ada408..0b56c62bb2 100644
--- a/packages/frontend/src/style.scss
+++ b/packages/frontend/src/style.scss
@@ -49,7 +49,7 @@
 	@media (max-width: 500px) {
 		--MI-margin: var(--MI-marginHalf);
 	}
-	--MI-custom-font: 'sharkey-theme-font-face';
+	--MI_THEME-customFont: 'sharkey-theme-font-face';
 }
 
 html.radius-misskey {
@@ -74,7 +74,7 @@ html {
 	accent-color: var(--MI_THEME-accent);
 	overflow: auto;
 	overflow-wrap: break-word;
-	font-family: var(--custom-font), 'FOT-NewRodin Pro', sans-serif;
+	font-family: var(--MI_THEME-customFont), 'FOT-NewRodin Pro', sans-serif;
 	font-size: 14px;
 	line-height: 1.35;
 	text-size-adjust: 100%;