diff --git a/etc/cshrc b/etc/cshrc
index 4fb51cad68..688905c2cf 100644
--- a/etc/cshrc
+++ b/etc/cshrc
@@ -43,7 +43,7 @@ setenv WM_PROJECT_VERSION plus
 #   values to an appropriate path.
 #
 setenv FOAM_INST_DIR `lsof +p $$ |& \
-    sed -n -e 's@[^/]*@@' -e 's@/'$WM_PROJECT'[^/]*/etc/cshrc@@p'`
+    sed -n -e 's@[^/]*@@' -e 's@/'$WM_PROJECT'[^/]*/etc/cshrc.*@@p'`
 # setenv FOAM_INST_DIR  $HOME/$WM_PROJECT
 # setenv FOAM_INST_DIR  /opt/$WM_PROJECT
 # setenv FOAM_INST_DIR  /usr/local/$WM_PROJECT