diff --git a/src/ConfigLister.php b/src/ConfigLister.php
index a86e9d2..f8a52fe 100644
--- a/src/ConfigLister.php
+++ b/src/ConfigLister.php
@@ -123,7 +123,7 @@ class ConfigLister implements ConfigListInterface {
   public function getTypeNameByConfigName($name) {
     $definitions = $this->listTypes();
     foreach ($this->typesByPrefix as $prefix => $entity_type) {
-      if (strpos($name, $prefix) === 0) {
+      if (strpos($name, $prefix . '.') === 0) {
         return $entity_type;
       }
     }
@@ -211,7 +211,7 @@ class ConfigLister implements ConfigListInterface {
     $list = array_combine($list, $list);
     foreach ($list as $name) {
       foreach ($prefixes as $prefix) {
-        if (strpos($name, $prefix) === 0) {
+        if (strpos($name, $prefix . '.') === 0) {
           unset($list[$name]);
         }
       }