diff --git a/docs.it4i/software/tools/singularity-it4i.md b/docs.it4i/software/tools/singularity-it4i.md
index 63ab62bae9419953768cbdf914f57438537f2d93..2d5c7fca5f5b5ef7ba3a94438292bdee6bc50d57 100644
--- a/docs.it4i/software/tools/singularity-it4i.md
+++ b/docs.it4i/software/tools/singularity-it4i.md
@@ -170,7 +170,7 @@ Hello world, #of cores: 24
 Hello world from MIC, #of cores: 244
 ```
 
-### GPU image
+### GPU Image
 
 For example submit job `qsub -A PROJECT -q qnvidia -l select=1:ncpus=16:mpiprocs=16 -l walltime=01:00:00 -I`