diff --git a/lib/dump_stat.rb b/lib/dump_stat.rb
index 20c58629237c894ff546e1070b278d3a3f13a70e..c7507d8d9a04231794e02c14a0647c0361b7e8b4 100644
--- a/lib/dump_stat.rb
+++ b/lib/dump_stat.rb
@@ -85,7 +85,7 @@ module DumpStat
 
   # keep message | log line which key end with .message|.log
   def self.assign_log_message(key, value)
-    if key.starts_with?('msg.', 'log.', 'element.') ||
+    if key.start_with?('msg.', 'log.', 'element.') ||
        key.end_with?('.message', '.log', '.element')
       k = @monitor + '.' + key
       @result[k] = value
diff --git a/src/create_job_cpio.cr b/src/create_job_cpio.cr
index db21e2a78cf23c3c0a8ee56efc705c9777af4b91..ab1b6883cf013e1f6dbb138867af574fea0663f8 100644
--- a/src/create_job_cpio.cr
+++ b/src/create_job_cpio.cr
@@ -46,8 +46,8 @@ require "./lib/jobfile_operate"
 
 class JobHash
   def generate_shell_script
-    generate_shell_vars +
-    generate_shell_run
+    result = generate_shell_vars + generate_shell_run
+    result
   end
 
   def generate_shell_run
@@ -108,8 +108,8 @@ class JobHash
 
   private def process_section(str, section)
     return unless entries = @hash_hhh[section]?
-
     entries.each do |program, config|
+      config = {} of String => String if config.nil?
       next unless config.is_a?(Hash)
 
       # Handle pre-script