diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
index f236c5bb1ee..aa47def440c 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
@@ -519,7 +519,9 @@ class ClassMetadataInfo implements ClassMetadata
      *
      * @see discriminatorColumn
      *
-     * @var mixed
+     * @var array<string, string>
+     *
+     * @psalm-var array<string, class-string>
      */
     public $discriminatorMap = [];
 
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index bb7e666e893..f8422b1f0c8 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -171,12 +171,12 @@ parameters:
 			path: lib/Doctrine/ORM/Id/TableGenerator.php
 
 		-
-			message: "#^Parameter \\#2 \\$discrMap of static method Doctrine\\\\ORM\\\\Internal\\\\Hydration\\\\HydrationException\\:\\:invalidDiscriminatorValue\\(\\) expects array\\<string, string\\>, array\\<int, int\\|string\\> given\\.$#"
+			message: "#^Parameter \\#2 \\$discrMap of static method Doctrine\\\\ORM\\\\Internal\\\\Hydration\\\\HydrationException\\:\\:invalidDiscriminatorValue\\(\\) expects array\\<string, string\\>, array\\<int, string\\> given\\.$#"
 			count: 1
 			path: lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
 
 		-
-			message: "#^Parameter \\#2 \\$discrMap of static method Doctrine\\\\ORM\\\\Internal\\\\Hydration\\\\HydrationException\\:\\:invalidDiscriminatorValue\\(\\) expects array\\<string, string\\>, array\\<int, int\\|string\\> given\\.$#"
+			message: "#^Parameter \\#2 \\$discrMap of static method Doctrine\\\\ORM\\\\Internal\\\\Hydration\\\\HydrationException\\:\\:invalidDiscriminatorValue\\(\\) expects array\\<string, string\\>, array\\<int, string\\> given\\.$#"
 			count: 1
 			path: lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php
 
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index ad5b01db832..1a5ef25ad74 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -653,7 +653,8 @@
       <code>$table</code>
       <code>$tableGeneratorDefinition</code>
     </PropertyNotSetInConstructor>
-    <PropertyTypeCoercion occurrences="10">
+    <PropertyTypeCoercion occurrences="11">
+      <code>$this-&gt;discriminatorMap</code>
       <code>$this-&gt;entityListeners</code>
       <code>$this-&gt;fieldMappings</code>
       <code>$this-&gt;fullyQualifiedClassName($repositoryClassName)</code>