diff --git a/_sass/_config.scss b/_sass/_config.scss
index 9b1bd1cc1..d8569fd8d 100755
--- a/_sass/_config.scss
+++ b/_sass/_config.scss
@@ -42,14 +42,14 @@ $line-height: 44px; // Consistent height for buttons, inputs etc.
 
 @font-face {
     font-family: 'IBM Plex Sans';
-    src: url('/assets/fonts/IBM_Plex_Sans/IBMPlexSans-Regular.tff') format('truetype');
+    src: url('/assets/fonts/IBM_Plex_Sans/IBMPlexSans-Regular.ttf') format('truetype');
     font-weight: normal;
     font-style: normal;
 }
 
 @font-face {
     font-family: 'IBM Plex Mono';
-    src: url('/assets/fonts/IBM_Plex_Mono/IBMPlexMono-Light.tff') format('truetype');
+    src: url('/assets/fonts/IBM_Plex_Mono/IBMPlexMono-Light.ttf') format('truetype');
     font-weight: normal;
     font-style: normal;
 }