diff --git a/bin/env.sh b/bin/env.sh
index b4d0d2bb8..28d3ea18b 100644
--- a/bin/env.sh
+++ b/bin/env.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 thisEnv=${BASH_SOURCE[0]:-$0}
-export CLAS12DIR=$(realpath $(dirname $thisEnv)/..)
+export CLAS12DIR=$(cd $(dirname $thisEnv)/.. && pwd -P)
 
 # Set default field maps (but do not override user's env):
 if [ -z "$COAT_MAGFIELD_TORUSMAP" ]; then