diff --git a/SPECS/java-21-openjdk.spec b/SPECS/java-21-openjdk.spec
index 2c3d28d..ee9944d 100644
--- a/SPECS/java-21-openjdk.spec
+++ b/SPECS/java-21-openjdk.spec
@@ -1263,7 +1263,7 @@ Provides: java-%{origin}-src%{?1} = %{epoch}:%{version}-%{release}
 # Prevent brp-java-repack-jars from being run
 %global __jar_repack 0
 # Define the OS the portable JDK is built on
-%global pkgos rhel7
+%undefine pkgos
 # Define the root name of the portable packages
 %global pkgnameroot java-%{featurever}-%{origin}-portable%{?pkgos:-%{pkgos}}