diff --git a/php/psalm-baseline.xml b/php/psalm-baseline.xml
index 03249af4..ff78305b 100644
--- a/php/psalm-baseline.xml
+++ b/php/psalm-baseline.xml
@@ -3,7 +3,6 @@
   <file src="src/ContainerDefinitionFetcher.php">
     <PossiblyFalseArgument>
       <code><![CDATA[file_get_contents($path)]]></code>
-      <code><![CDATA[file_get_contents(__DIR__ . '/../containers.json')]]></code>
     </PossiblyFalseArgument>
   </file>
   <file src="src/Controller/DockerController.php">
@@ -36,6 +35,7 @@
   <file src="src/Data/DataConst.php">
     <FalsableReturnStatement>
       <code><![CDATA[realpath(__DIR__ . '/../cool-seccomp-profile.json')]]></code>
+      <code><![CDATA[realpath(__DIR__ . '/../containers.json')]]></code>
       <code><![CDATA[realpath(__DIR__ . '/../../../community-containers/')]]></code>
       <code><![CDATA[realpath(__DIR__ . '/../../data/')]]></code>
       <code><![CDATA[realpath(__DIR__ . '/../../session/')]]></code>
@@ -45,6 +45,7 @@
       <code><![CDATA[string]]></code>
       <code><![CDATA[string]]></code>
       <code><![CDATA[string]]></code>
+      <code><![CDATA[string]]></code>
     </InvalidFalsableReturnType>
   </file>
   <file src="src/Docker/DockerActionManager.php">
diff --git a/php/src/ContainerDefinitionFetcher.php b/php/src/ContainerDefinitionFetcher.php
index a404e3a3..f352db8f 100644
--- a/php/src/ContainerDefinitionFetcher.php
+++ b/php/src/ContainerDefinitionFetcher.php
@@ -38,7 +38,7 @@ readonly class ContainerDefinitionFetcher {
      */
     private function GetDefinition(): array
     {
-        $data = json_decode(file_get_contents(__DIR__ . '/../containers.json'), true);
+        $data = json_decode(file_get_contents(DataConst::GetContainersDefinitionPath()), true);
 
         $additionalContainerNames = [];
         foreach ($this->configurationManager->GetEnabledCommunityContainers() as $communityContainer) {
diff --git a/php/src/Data/DataConst.php b/php/src/Data/DataConst.php
index a777d997..1db2f6ae 100644
--- a/php/src/Data/DataConst.php
+++ b/php/src/Data/DataConst.php
@@ -62,4 +62,8 @@ class DataConst {
     public static function GetCollaboraSeccompProfilePath() : string {
         return realpath(__DIR__ . '/../cool-seccomp-profile.json');
     }
+
+    public static function GetContainersDefinitionPath() : string {
+        return realpath(__DIR__ . '/../containers.json');
+    }
 }