diff --git a/.gitea/workflows/sonarqube.yml b/.gitea/workflows/sonarqube.yml
index 1ab8b372..fb4a02b4 100644
--- a/.gitea/workflows/sonarqube.yml
+++ b/.gitea/workflows/sonarqube.yml
@@ -72,10 +72,14 @@ jobs:
 
       - name: SonarQube Analysis
         run: |
-          # Derive JAVA_HOME from the java binary on PATH (set by build image)
+          # Derive JAVA_HOME from jar binary (java may not be on PATH directly)
           if [ -z "$JAVA_HOME" ]; then
-            export JAVA_HOME=$(dirname $(dirname $(readlink -f $(which java))))
+            JAR_PATH=$(readlink -f $(which jar) 2>/dev/null || find / -name jar -type f 2>/dev/null | head -1)
+            export JAVA_HOME=$(dirname $(dirname "$JAR_PATH"))
           fi
+          export PATH="$JAVA_HOME/bin:$PATH"
+          echo "JAVA_HOME=$JAVA_HOME"
+          java -version
           sonar-scanner \
             -Dsonar.host.url="$SONAR_HOST_URL" \
             -Dsonar.token="$SONAR_TOKEN" \