diff --git a/SC2234.md b/SC2234.md
index db9d1eb..bd0f291 100644
--- a/SC2234.md
+++ b/SC2234.md
@@ -1,4 +1,4 @@
-## Remove superfluous `(..)` around test command.
+## Remove superfluous `(..)` around test command to avoid subshell overhead.
 
 ### Problematic code:
 
@@ -14,7 +14,7 @@
 
 ### Rationale:
 
-You are wrapping a single test command in `(..)`, creating an unnecessary subshell. This serves no purpose, but is dramatically slower:
+You are wrapping a single test command in `(..)`, creating an unnecessary subshell. This serves no purpose, but is significantly slower:
 
 ```
 $ i=0; time while ( [ "$i" -lt 10000 ] ); do i=$((i+1)); done