diff --git a/docs.it4i/software/chemistry/orca.md b/docs.it4i/software/chemistry/orca.md
index 9123458f4b8fb29403d904af8be05c0f8f3a1c45..a216529a9b76dcef2186acce976c65dc2a11843f 100644
--- a/docs.it4i/software/chemistry/orca.md
+++ b/docs.it4i/software/chemistry/orca.md
@@ -229,7 +229,7 @@ EOF
 cp -r $PBS_O_WORKDIR/* .
 
 # run calculations
-/apps/all/ORCA/5.0.1-OpenMPI-4.1.1/orca ${PBS_JOBNAME}.inp > $PBS_O_WORKDIR/${PBS_JOBNAME}.out
+$(which orca) ${PBS_JOBNAME}.inp > $PBS_O_WORKDIR/${PBS_JOBNAME}.out
 
 # copy output files to home, delete the rest
 cp * $PBS_O_WORKDIR/ && cd $PBS_O_WORKDIR