diff --git a/DictionaryTypes.txt b/DictionaryTypes.txt
index 0a1045f..2dfce02 100644
--- a/DictionaryTypes.txt
+++ b/DictionaryTypes.txt
@@ -201,8 +201,8 @@ enum(unit) "FIFF value unit code"
     lx		116	"lux"
     T_m		201	"T/m"
     Am		202	"Am"
-    Am_m2		203 "Am/m^2"
-    Am_m3		204 "Am/m^3"
+    Am_m2		203 "Am/m²"
+    Am_m3		204 "Am/m³"
 }
 
 enum(unitm) "FIFF value multipliers"