diff --git a/docs/ku_sund_dangpu.md b/docs/ku_sund_dangpu.md
index 6121c87..92e73b5 100644
--- a/docs/ku_sund_dangpu.md
+++ b/docs/ku_sund_dangpu.md
@@ -13,6 +13,7 @@ Before running the pipeline you will need to load Nextflow and Singularity using
 ## Load Nextflow and Singularity environment modules
 module purge
 module load openjdk/11.0.0 nextflow/22.04.3 singularity/3.8.0 
+# alternative module load jdk/1.8.0_291 nextflow/22.04.3 singularity/3.8.0 
 export NXF_OPTS='-Xms1g -Xmx4g'
 export NXF_HOME=/projects/dan1/people/${USER}/cache/nxf-home
 export NXF_TEMP=/scratch/tmp