diff --git a/usr/bin/faillock-user b/usr/bin/faillock-user
index ffe1988..e8cf697 100755
--- a/usr/bin/faillock-user
+++ b/usr/bin/faillock-user
@@ -18,8 +18,10 @@ if ! command -v "/usr/sbin/faillock" &>/dev/null; then
    exit 2
 fi
 
+## Debugging.
 who_ami="$(whoami)"
-
+true "$0: who_ami: $who_ami"
+true "$0: PAM_USER: $PAM_USER"
 true "$0: SUDO_USER: $SUDO_USER"
 
 if [ "$SUDO_USER" = "" ]; then
diff --git a/usr/libexec/security-misc/pam-info b/usr/libexec/security-misc/pam-info
index 0210634..ab5f85f 100755
--- a/usr/libexec/security-misc/pam-info
+++ b/usr/libexec/security-misc/pam-info
@@ -21,14 +21,17 @@ true "$0: START PHASE 2"
 
 set -o pipefail
 
+## Debugging.
+who_ami="$(whoami)"
+true "$0: who_ami: $who_ami"
+true "$0: PAM_USER: $PAM_USER"
+true "$0: SUDO_USER: $SUDO_USER"
+
 if [ "$PAM_USER" = "" ]; then
    true "$0: ERROR: Environment variable PAM_USER is unset!"
    exit 0
 fi
 
-## Debugging.
-who_ami="$(whoami)"
-
 if ! command -v "/usr/bin/faillock-user" &>/dev/null; then
    true "$0: The /usr/bin/faillock-user wrapper is unavailable, exiting."
    exit 0