diff --git a/CHANGELOG.md b/CHANGELOG.md
index 568fbef..7ba136d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.2] - 2024-07-01
+
+### Fixed
+
+- Fix unbound variable error (#9)
+
 ## [1.0.1] - 2024-01-29
 
 ### Fixed
diff --git a/src/sqids b/src/sqids
index ea338b9..fe8831e 100755
--- a/src/sqids
+++ b/src/sqids
@@ -983,7 +983,7 @@ version() {
 }
 
 main() {
-    local mode
+    local mode=""
     local min_length="$DEFAULT_MIN_LENGTH"
     local alphabet="$DEFAULT_ALPHABET"
     local block_list="${DEFAULT_BLOCKLIST[*]}"