diff --git a/firmware/common/device_info.h b/firmware/common/device_info.h
index 3de6c22..da8a245 100644
--- a/firmware/common/device_info.h
+++ b/firmware/common/device_info.h
@@ -9,7 +9,7 @@
 #define DEVICE_NAME_STR         "ChameleonLite"
 #define DEVICE_NAME_STR_SHORT   "CL"
 #else
-#error "Unknown device name?"
+#error No device defined
 #endif
 
 
diff --git a/firmware/common/hw_connect.c b/firmware/common/hw_connect.c
index 06a24e4..bb86bd5 100644
--- a/firmware/common/hw_connect.c
+++ b/firmware/common/hw_connect.c
@@ -9,7 +9,7 @@ const static chameleon_device_type_t m_device_type =
 #elif defined(PROJECT_CHAMELEON_LITE)
     CHAMELEON_LITE;
 #else
-    "No device define before project build.";
+#error No device defined
 #endif
 
 char g_extern_product_str[sizeof(DEVICE_NAME_STR) + sizeof(": hw_v255, fw_v65535") + 1];