diff --git a/aegisub/build/libass/config.h b/aegisub/build/libass/config.h
index 8309fa852..066605c3b 100644
--- a/aegisub/build/libass/config.h
+++ b/aegisub/build/libass/config.h
@@ -2,6 +2,5 @@
 #define _CRT_NONSTDC_NO_DEPRECATE
 
 #define CONFIG_FONTCONFIG 1
-#define CONFIG_ICONV 1
 
 #define M_PI 3.1415926535897932384626433832795