diff --git a/config_example.sh b/config_example.sh
index 7c1a1ae4e..46fccfce5 100755
--- a/config_example.sh
+++ b/config_example.sh
@@ -198,4 +198,4 @@ set -x
 # PEM-encoded X.509 certificate bundle that will be added to the nodes' trusted 
 # certificate store. This trust bundle may also be used when a proxy has 
 # been configured.
-# export ADDITIONAL_TRUST_BUNDLE=$(cat ca)
+# export ADDITIONAL_TRUST_BUNDLE=/path/to/ca_file
diff --git a/ocp_install_env.sh b/ocp_install_env.sh
index d150d0991..00d02e4d6 100644
--- a/ocp_install_env.sh
+++ b/ocp_install_env.sh
@@ -132,16 +132,12 @@ EOF
 }
 
 function additional_trust_bundle() {
-    if [ ! -z "$ADDITIONAL_TRUST_BUNDLE" ] && [ -z $MIRROR_IMAGES ]; then
-cat <<EOF
-additionalTrustBundle: |
-$(echo ${ADDITIONAL_TRUST_BUNDLE} | awk '{ print " ", $0 }')
-EOF
-    elif [ ! -z "$ADDITIONAL_TRUST_BUNDLE" ] && [ ! -z "$MIRROR_IMAGES" ]; then
-cat <<EOF
-$(echo ${ADDITIONAL_TRUST_BUNDLE} | awk '{ print " ", $0 }')
-EOF
+  if [ ! -z "$ADDITIONAL_TRUST_BUNDLE" ]; then
+    if [ -z $MIRROR_IMAGES ]; then
+      echo "additionalTrustBundle: |"
     fi
+    awk '{ print " ", $0 }' "${ADDITIONAL_TRUST_BUNDLE}"
+  fi
 }
 
 function cluster_network() {