diff --git a/examples/chef/common/chef-air-quality.h b/examples/chef/common/chef-air-quality.h
index 2eaf3ef28fdf66..e7589488d41d74 100644
--- a/examples/chef/common/chef-air-quality.h
+++ b/examples/chef/common/chef-air-quality.h
@@ -22,10 +22,10 @@
 #include <lib/core/DataModelTypes.h>
 
 #ifdef MATTER_DM_PLUGIN_AIR_QUALITY_SERVER
-Protocols::InteractionModel::Status chefAirQualityWriteCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
-                                                                const EmberAfAttributeMetadata * attributeMetadata,
-                                                                uint8_t * buffer);
-Protocols::InteractionModel::Status chefAirQualityReadCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
-                                                               const EmberAfAttributeMetadata * attributeMetadata, uint8_t * buffer,
-                                                               uint16_t maxReadLength);
+chip::Protocols::InteractionModel::Status chefAirQualityWriteCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
+                                                                      const EmberAfAttributeMetadata * attributeMetadata,
+                                                                      uint8_t * buffer);
+chip::Protocols::InteractionModel::Status chefAirQualityReadCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
+                                                                     const EmberAfAttributeMetadata * attributeMetadata,
+                                                                     uint8_t * buffer, uint16_t maxReadLength);
 #endif
diff --git a/examples/chef/common/chef-concentration-measurement.h b/examples/chef/common/chef-concentration-measurement.h
index 9b8fc571872c6b..887df7d943ee08 100644
--- a/examples/chef/common/chef-concentration-measurement.h
+++ b/examples/chef/common/chef-concentration-measurement.h
@@ -31,10 +31,11 @@
     defined(MATTER_DM_PLUGIN_PM10_CONCENTRATION_MEASUREMENT_SERVER) ||                                                             \
     defined(MATTER_DM_PLUGIN_TOTAL_VOLATILE_ORGANIC_COMPOUNDS_CONCENTRATION_MEASUREMENT_SERVER) ||                                 \
     defined(MATTER_DM_PLUGIN_RADON_CONCENTRATION_MEASUREMENT_SERVER)
-Protocols::InteractionModel::Status chefConcentrationMeasurementWriteCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
-                                                                              const EmberAfAttributeMetadata * attributeMetadata,
-                                                                              uint8_t * buffer);
-Protocols::InteractionModel::Status chefConcentrationMeasurementReadCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
-                                                                             const EmberAfAttributeMetadata * attributeMetadata,
-                                                                             uint8_t * buffer, uint16_t maxReadLength);
+chip::Protocols::InteractionModel::Status
+chefConcentrationMeasurementWriteCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
+                                          const EmberAfAttributeMetadata * attributeMetadata, uint8_t * buffer);
+chip::Protocols::InteractionModel::Status
+chefConcentrationMeasurementReadCallback(chip::EndpointId endpoint, chip::ClusterId clusterId,
+                                         const EmberAfAttributeMetadata * attributeMetadata, uint8_t * buffer,
+                                         uint16_t maxReadLength);
 #endif