diff --git a/src/hwylterm/bbansi.nim b/src/hwylterm/bbansi.nim
index 55fc21a..c9f2ac9 100644
--- a/src/hwylterm/bbansi.nim
+++ b/src/hwylterm/bbansi.nim
@@ -19,7 +19,8 @@ func stripAnsi*(s: string): string =
       while s[i] != 'm':
         inc i
       inc i
-    result.add s[i]
+    if i < s.len:
+      result.add s[i]
     inc i
 
 type
diff --git a/tests/tbbansi.nim b/tests/tbbansi.nim
index 2f92aae..b76a7df 100644
--- a/tests/tbbansi.nim
+++ b/tests/tbbansi.nim
@@ -66,6 +66,7 @@ suite "basic":
 
 suite "strutils":
   test "stripAnsi":
+    check stripAnsi($bb"[red]red!") == "red!"
     check stripAnsi("\e[1mBold String!") == "Bold String!"
 
   test "&":