diff --git a/boneio-dimmer_2rgbw-v0_3.yaml b/boneio-dimmer_2rgbw-v0_3.yaml
index 712037a..f76685f 100644
--- a/boneio-dimmer_2rgbw-v0_3.yaml
+++ b/boneio-dimmer_2rgbw-v0_3.yaml
@@ -76,7 +76,7 @@ text_sensor:
     id: hostname
     entity_category: diagnostic
     lambda: |-
-      return id(eth).get_use_address();
+      return std::string(id(eth).get_use_address());
     update_interval: 5min
 
 binary_sensor:
diff --git a/boneio-dimmer_4cct-v0_3.yaml b/boneio-dimmer_4cct-v0_3.yaml
index 9091f0d..ade97c4 100644
--- a/boneio-dimmer_4cct-v0_3.yaml
+++ b/boneio-dimmer_4cct-v0_3.yaml
@@ -76,7 +76,7 @@ text_sensor:
     id: hostname
     entity_category: diagnostic
     lambda: |-
-      return id(eth).get_use_address();
+      return std::string(id(eth).get_use_address());
     update_interval: 5min
 
 binary_sensor:
diff --git a/boneio-dimmer_8ch-v0_3.yaml b/boneio-dimmer_8ch-v0_3.yaml
index 2633379..df60a4a 100644
--- a/boneio-dimmer_8ch-v0_3.yaml
+++ b/boneio-dimmer_8ch-v0_3.yaml
@@ -76,7 +76,7 @@ text_sensor:
     id: hostname
     entity_category: diagnostic
     lambda: |-
-      return id(eth).get_use_address();
+      return std::string(id(eth).get_use_address());
     update_interval: 5min
 
 binary_sensor:
diff --git a/boneio-dimmer_8ch-v0_4.yaml b/boneio-dimmer_8ch-v0_4.yaml
index f0d5f5f..ee17ae2 100644
--- a/boneio-dimmer_8ch-v0_4.yaml
+++ b/boneio-dimmer_8ch-v0_4.yaml
@@ -137,7 +137,7 @@ text_sensor:
     id: hostname
     entity_category: diagnostic
     lambda: |-
-      return id(eth).get_use_address();
+      return std::string(id(eth).get_use_address());
     update_interval: 5min
 
 binary_sensor: