diff --git a/st/config.def.h b/st/config.def.h
index 9961f79..4355f23 100644
--- a/st/config.def.h
+++ b/st/config.def.h
@@ -5,7 +5,7 @@
  *
  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
  */
-static char *font = "CaskaydiaCoveNerdFontMono:size=16:antialias=true:autohint=true";
+static char *font = "CaskaydiaCoveNerdFontMono:size=15:antialias=true:autohint=true";
 static int borderpx = 2;
 
 /*