diff --git a/developer/bin/list_id_in_kext b/developer/bin/list_id_in_kext
index ba41559010..ad35fd1ab3 100755
--- a/developer/bin/list_id_in_kext
+++ b/developer/bin/list_id_in_kext
@@ -26,7 +26,7 @@ xargs="$(/usr/bin/which gxargs || printf '/usr/bin/xargs')"
 
 bundle_id_source_1 () {
     /usr/bin/find "$kextdir" -name Info.plist -print0 |                                \
-    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- |                                \
+    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- 2> /dev/null |                   \
     /usr/bin/perl -0777 -ne                                                            \
       'while (m{<key>\s*CFBundleIdentifier\s*</key>\s*<string>([^<]+?)</string>}sg) { print "$1\n" }'
 }
diff --git a/developer/bin/list_ids_in_app b/developer/bin/list_ids_in_app
index a7335e6485..b04f9bcea6 100755
--- a/developer/bin/list_ids_in_app
+++ b/developer/bin/list_ids_in_app
@@ -27,7 +27,7 @@ xargs="$(/usr/bin/which gxargs || printf '/usr/bin/xargs')"
 
 bundle_id_source_1 () {
     /usr/bin/find "$appdir" -name Info.plist -print0 |                                 \
-    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- |                                \
+    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- 2> /dev/null |                   \
     /usr/bin/perl -0777 -ne                                                            \
       'while (m{<key>\s*CFBundleIdentifier\s*</key>\s*<string>([^<]+?)</string>}sg) { print "$1\n" }'
 }
diff --git a/developer/bin/list_ids_in_pkg b/developer/bin/list_ids_in_pkg
index c9c3594038..a6e17481ba 100755
--- a/developer/bin/list_ids_in_pkg
+++ b/developer/bin/list_ids_in_pkg
@@ -32,7 +32,7 @@ bundle_id_source_1 () {
 
 bundle_id_source_2 () {
     /usr/bin/find "$pkgdir" -name Info.plist -print0 |                                 \
-    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- |                                \
+    "$xargs" -0 /usr/bin/plutil -convert xml1 -o - -- 2> /dev/null |                   \
     /usr/bin/perl -0777 -ne                                                            \
       'while (m{<key>\s*CFBundleIdentifier\s*</key>\s*<string>([^<]+?)</string>}sg) { print "$1\n" }'
 }
diff --git a/developer/bin/list_url_attributes_on_file b/developer/bin/list_url_attributes_on_file
index 34e90a8ac2..055fddc6c4 100755
--- a/developer/bin/list_url_attributes_on_file
+++ b/developer/bin/list_url_attributes_on_file
@@ -37,7 +37,7 @@ die () {
 
 xml_source_1 () {
     if /usr/bin/xattr -p "$attribute_1" "$file_arg" > /dev/null 2>&1; then
-        /usr/bin/xattr -p "$attribute_1" "$file_arg" | /usr/bin/xxd -r -p | /usr/bin/plutil -convert xml1 -o - -
+        /usr/bin/xattr -p "$attribute_1" "$file_arg" | /usr/bin/xxd -r -p | /usr/bin/plutil -convert xml1 -o - - 2> /dev/null
     fi
 }