diff --git a/runtime/doc/sign.txt b/runtime/doc/sign.txt
index a8ce685..1e88a62 100644
--- a/runtime/doc/sign.txt
+++ b/runtime/doc/sign.txt
@@ -78,7 +78,7 @@
 							*sign-priority*
 Each placed sign is assigned a priority value. When multiple signs are placed
 on the same line, the attributes of the sign with the highest priority is used
-independent of the sign group. The default priority for a sign is 10. The
+independently of the sign group. The default priority for a sign is 10. The
 priority is assigned at the time of placing a sign.
 
 When the line on which the sign is placed is deleted, the sign is moved to the