diff --git a/java-1.8.0-openjdk.spec b/java-1.8.0-openjdk.spec
index 814e696..c766c3d 100644
--- a/java-1.8.0-openjdk.spec
+++ b/java-1.8.0-openjdk.spec
@@ -88,7 +88,8 @@ URL:      http://openjdk.java.net/
 # Settings used by the portable build
 %global pversion %{version}
 # Release field for the portable build
-%global prelease %{?eaprefix}%{portablerelease}%{?extraver}
+# The rpmrelease field is always zero for portables
+%global prelease %{?eaprefix}%{portablerelease}.0%{?extraver}
 # Portable suffix differs between RHEL and CentOS
 %if 0%{?centos} == 0
 %global portablerhel 8