diff --git a/openjdk-21.spec b/openjdk-21.spec
index 1986d107ac2601b393fc7324c9c2b44ddf2c4f4a..3c1cfb8ac964b64010964880ff19b8c1345c4a9a 100644
--- a/openjdk-21.spec
+++ b/openjdk-21.spec
@@ -897,7 +897,7 @@ Name:    java-21-%{origin}
 Version: %{newjavaver}.%{buildver}
 # This package needs `.rolling` as part of Release so as to not conflict on install with
 # java-X-openjdk. I.e. when latest rolling release is also an LTS release packaged as
-Release: 3
+Release: 4
 
 # java-1.5.0-ibm from jpackage.org set Epoch to 1 for unknown reasons
 # and this change was brought into RHEL-4. java-1.5.0-ibm packages
@@ -1669,9 +1669,10 @@ else
   end
 end
 -- run content of included file with fake args
+arg = nil; -- it is better to null the arg up, no meter if they exists or not, and use cjc as module in unified way, instead of relaying on "main" method during require "copy_jdk_configs.lua"
 cjc = require "copy_jdk_configs.lua"
-arg = {"--currentjvm", "%{uniquesuffix %{nil}}", "--jvmdir", "%{_jvmdir %{nil}}", "--origname", "%{name}", "--origjavaver", "%{javaver}", "--arch", "%{_arch}", "--temp", "%{rpm_state_dir}/%{name}.%{_arch}"}
-cjc.mainProgram(arg)
+args = {"--currentjvm", "%{uniquesuffix %{nil}}", "--jvmdir", "%{_jvmdir %{nil}}", "--origname", "%{name}", "--origjavaver", "%{javaver}", "--arch", "%{_arch}", "--temp", "%{rpm_state_dir}/%{name}.%{_arch}"}
+cjc.mainProgram(args) -- the returns from copy_jdk_configs.lua should not affect this 'main', so it should run under all circumstances, except fatal error
 
 %post
 %{post_script %{nil}}
@@ -1796,6 +1797,9 @@ cjc.mainProgram(arg)
 
 
 %changelog
+* Tue Jul 16 2024 songliyang <songliyang@kylinos.cn> - 1:21.0.3.9-4
+- null the arg to solve openjdk-headless install error
+
 * Tue Jun 25 2024 peng.zou <peng.zou@shingroup.cn> - 1:21.0.3.9-3
 - init support of ppc64le