diff --git a/main.cpp b/main.cpp
index a3e540c86..117446393 100644
--- a/main.cpp
+++ b/main.cpp
@@ -42,6 +42,7 @@ void print_report(const pesieve::ReportEx& report, const t_params args)
 void free_params(t_params &args)
 {
 	free_strparam(args.modules_ignored);
+	free_strparam(args.pattern_file);
 }
 
 int main(int argc, char *argv[])