diff --git a/slides-c2s-2026.tex b/slides-c2s-2026.tex
index 07df60b..99a2b11 100644
--- a/slides-c2s-2026.tex
+++ b/slides-c2s-2026.tex
@@ -42,22 +42,25 @@
 \setbeamercolor{palette primary}{bg=pslblue, fg=white}
 
 %% ── Fonts ────────────────────────────────────────────────────────────────
-\setsansfont{IBM Plex Sans}[
-  UprightFont = *-Regular,
-  BoldFont = *-SemiBold,
-  ItalicFont = *-Italic,
-  BoldItalicFont = *-SemiBoldItalic,
+\setsansfont{IBMPlexSans}[
+  Path = /usr/share/fonts/truetype/ibm-plex/,
+  UprightFont = *-Regular.ttf,
+  BoldFont = *-SemiBold.ttf,
+  ItalicFont = *-Italic.ttf,
+  BoldItalicFont = *-SemiBoldItalic.ttf,
   Scale = 1.0
 ]
-\setmainfont{IBM Plex Serif}[
-  UprightFont = *-Regular,
-  BoldFont = *-SemiBold,
-  ItalicFont = *-Italic,
-  BoldItalicFont = *-SemiBoldItalic,
+\setmainfont{IBMPlexSerif}[
+  Path = /usr/share/fonts/truetype/ibm-plex/,
+  UprightFont = *-Regular.ttf,
+  BoldFont = *-SemiBold.ttf,
+  ItalicFont = *-Italic.ttf,
+  BoldItalicFont = *-SemiBoldItalic.ttf,
 ]
-\setmonofont{IBM Plex Mono}[
-  UprightFont = *-Regular,
-  BoldFont = *-Bold,
+\setmonofont{IBMPlexMono}[
+  Path = /usr/share/fonts/truetype/ibm-plex/,
+  UprightFont = *-Regular.ttf,
+  BoldFont = *-Bold.ttf,
   Scale = 0.88
 ]