diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71f9e50f..6968fb21 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ only add here if you are working on a PR
 
 ### Fixed
 
+- The `--multiply-processes` option was being parsed into `options[:multiply-processes]` but was being referenced as `options[:multiply]` in the code 
+
 ## 5.3.0 - 2025-05-30
 
 ### Added
diff --git a/lib/parallel_tests/cli.rb b/lib/parallel_tests/cli.rb
index d53fbef5..5d40218d 100644
--- a/lib/parallel_tests/cli.rb
+++ b/lib/parallel_tests/cli.rb
@@ -15,7 +15,7 @@ def run(argv)
       ENV['DISABLE_SPRING'] ||= '1'
 
       num_processes = ParallelTests.determine_number_of_processes(options[:count])
-      num_processes = (num_processes * ParallelTests.determine_multiple(options[:multiply])).round
+      num_processes = (num_processes * ParallelTests.determine_multiple(options[:multiply_processes])).round
 
       options[:first_is_1] ||= first_is_1?