diff --git a/wildfly/server-subsystem/src/main/java/org/keycloak/subsystem/server/extension/ProviderResourceDefinition.java b/wildfly/server-subsystem/src/main/java/org/keycloak/subsystem/server/extension/ProviderResourceDefinition.java
index 0a4bf36845..68ba9bb327 100644
--- a/wildfly/server-subsystem/src/main/java/org/keycloak/subsystem/server/extension/ProviderResourceDefinition.java
+++ b/wildfly/server-subsystem/src/main/java/org/keycloak/subsystem/server/extension/ProviderResourceDefinition.java
@@ -46,6 +46,7 @@ public class ProviderResourceDefinition extends SimpleResourceDefinition {
     static final PropertiesAttributeDefinition PROPERTIES =
             new PropertiesAttributeDefinition.Builder("properties", true)
             .setRestartAllServices()
+            .setAllowExpression(true)
             .build();
     
     protected static final ReloadRequiredWriteAttributeHandler WRITE_ATTR_HANDLER = new ReloadRequiredWriteAttributeHandler(ENABLED);