diff --git a/src/main/java/de/ph87/home/common/crud/CrudAction.java b/src/main/java/de/ph87/home/common/crud/CrudAction.java
new file mode 100644
index 0000000..1e8cd47
--- /dev/null
+++ b/src/main/java/de/ph87/home/common/crud/CrudAction.java
@@ -0,0 +1,5 @@
+package de.ph87.home.common.crud;
+
+public enum CrudAction {
+  CREATED, UPDATED, DELETED
+}
diff --git a/src/main/java/de/ph87/home/device/DeviceFilter.java b/src/main/java/de/ph87/home/device/DeviceFilter.java
index 9018568..36ff93b 100644
--- a/src/main/java/de/ph87/home/device/DeviceFilter.java
+++ b/src/main/java/de/ph87/home/device/DeviceFilter.java
@@ -29,10 +29,10 @@ public class DeviceFilter extends AbstractSearchFilter {
       return false;
     }
     final Boolean value = dto.getStateValue();
-    if (stateTrue != null && (dto.getStateProperty() == null || stateTrue != value)) {
+    if (stateTrue != null && (value == null || stateTrue != value)) {
       return false;
     }
-    if (stateFalse != null && (dto.getStateProperty() == null || stateFalse == value)) {
+    if (stateFalse != null && (value == null || stateFalse == value)) {
       return false;
     }
     return search(dto.getName());
diff --git a/src/main/java/de/ph87/home/device/DeviceService.java b/src/main/java/de/ph87/home/device/DeviceService.java
index a66f36b..aef9caa 100644
--- a/src/main/java/de/ph87/home/device/DeviceService.java
+++ b/src/main/java/de/ph87/home/device/DeviceService.java
@@ -1,5 +1,6 @@
 package de.ph87.home.device;
 
+import de.ph87.home.common.crud.CrudAction;
 import de.ph87.home.common.crud.EntityNotFound;
 import de.ph87.home.property.*;
 import jakarta.annotation.Nullable;
@@ -28,7 +29,7 @@ public class DeviceService {
 
   @NonNull
   public DeviceDto create(@NonNull final String name, @NonNull final String slug, @NonNull final String stateProperty) {
-    return toDto(deviceRepository.save(new Device(name, slug, stateProperty)));
+    return publish(deviceRepository.save(new Device(name, slug, stateProperty)), CrudAction.UPDATED);
   }
 
   public void setState(@NonNull final String uuidOrSlug, final boolean state) throws PropertyNotFound, PropertyNotWritable, PropertyTypeMismatch {
@@ -75,13 +76,15 @@ public class DeviceService {
 
   @EventListener(PropertyDto.class)
   public void onPropertyChange(@NonNull final PropertyDto<?> dto) {
-    deviceRepository.findAllByStatePropertyId(dto.getId()).forEach(this::publish);
+    deviceRepository.findAllByStatePropertyId(dto.getId()).forEach(device -> publish(device, CrudAction.CREATED));
   }
 
-  private void publish(@NonNull final Device device) {
-    final DeviceDto deviceDto = toDto(device);
-    log.info("Device updated: {}", deviceDto);
-    applicationEventPublisher.publishEvent(deviceDto);
+  @NonNull
+  private DeviceDto publish(@NonNull final Device device, @NonNull final CrudAction action) {
+    final DeviceDto dto = toDto(device);
+    log.info("Device {}: {}", action, dto);
+    applicationEventPublisher.publishEvent(dto);
+    return dto;
   }
 
   @NonNull