diff --git a/templates/profile/hathitrust/imgsrv/startup_imgsrv.erb b/templates/profile/hathitrust/imgsrv/startup_imgsrv.erb
index cedcc0f75..f0461f566 100644
--- a/templates/profile/hathitrust/imgsrv/startup_imgsrv.erb
+++ b/templates/profile/hathitrust/imgsrv/startup_imgsrv.erb
@@ -12,7 +12,7 @@ BIND=<%= @bind %>
 USE_CATPROCIO=1
 SCRIPT=$SDRROOT/imgsrv/cgi/imgsrv
 
-export SDRROOT SDRDATAROOT SDR_VIEW
+export SDRROOT SDRDATAROOT SDR_VIEW USE_CATPROCIO
 
 /usr/bin/plackup -I $SDRROOT/plack-lib -E production \
        -R $SCRIPT.psgi,$SCRIPT,$SDRROOT/bin/rsync.timestamp -s FCGI \