diff --git a/src/platform/nrfconnect/CHIPDevicePlatformConfig.h b/src/platform/nrfconnect/CHIPDevicePlatformConfig.h
index 596c834d60..59e62cee24 100644
--- a/src/platform/nrfconnect/CHIPDevicePlatformConfig.h
+++ b/src/platform/nrfconnect/CHIPDevicePlatformConfig.h
@@ -215,7 +215,11 @@
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_PRIORITY
 
 #ifndef CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
+#ifdef CONFIG_LTO
+#define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 8192
+#else
 #define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 6144
+#endif
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
 
 #define CHIP_DEVICE_CONFIG_MAX_EVENT_QUEUE_SIZE 64