Fix the templated `java-target-version` AsciiDoc property
diff --git a/src/site/_constants.adoc b/src/site/_constants.adoc
index 9ac7445..ee24a71 100644
--- a/src/site/_constants.adoc
+++ b/src/site/_constants.adoc
@@ -37,6 +37,6 @@
 :project-version: 1.3.0-SNAPSHOT
 :project-name: Log4j Kotlin API
 :project-id: log4j-kotlin
-:java-target-version: 17.0.8
+:java-target-version: 8
 :java-compiler-version: [17,18)
 :kotlin-version: 1.6.21
diff --git a/src/site/_constants.tmpl.adoc b/src/site/_constants.tmpl.adoc
index ce4b5c5..99117d3 100644
--- a/src/site/_constants.tmpl.adoc
+++ b/src/site/_constants.tmpl.adoc
@@ -37,6 +37,6 @@
 :project-version: ${project.version}
 :project-name: Log4j Kotlin API
 :project-id: log4j-kotlin
-:java-target-version: ${java.version}
+:java-target-version: ${maven.compiler.target}
 :java-compiler-version: ${minimalJavaBuildVersion}
 :kotlin-version: ${kotlin.version}