diff --git a/src/add-ons/kernel/drivers/power/acpi_lid/acpi_lid.cpp b/src/add-ons/kernel/drivers/power/acpi_lid/acpi_lid.cpp
index e6ee5e2ac7..39a3750f81 100644
--- a/src/add-ons/kernel/drivers/power/acpi_lid/acpi_lid.cpp
+++ b/src/add-ons/kernel/drivers/power/acpi_lid/acpi_lid.cpp
@@ -28,11 +28,11 @@
 
 //#define TRACE_LID
 #ifdef TRACE_LID
-#	define TRACE(x...) dprintf("acpi_lid: "x)
+#	define TRACE(x...) dprintf("acpi_lid: " x)
 #else
 #	define TRACE(x...)
 #endif
-#define ERROR(x...)	dprintf("acpi_lid: "x)
+#define ERROR(x...)	dprintf("acpi_lid: " x)
 
 
 static device_manager_info *sDeviceManager;