diff --git a/src/add-ons/kernel/drivers/ports/pc_serial/Tracing.cpp b/src/add-ons/kernel/drivers/ports/pc_serial/Tracing.cpp
index fd3be83643..358f0fca4a 100644
--- a/src/add-ons/kernel/drivers/ports/pc_serial/Tracing.cpp
+++ b/src/add-ons/kernel/drivers/ports/pc_serial/Tracing.cpp
@@ -78,7 +78,7 @@ usb_serial_trace(bool force, const char *format, ...)
 	static char buffer[1024];
 	char *bufferPointer = buffer;
 	if (!gLogToFile) {
-		const char *prefix = "\33[32m"DRIVER_NAME":\33[0m ";
+		const char *prefix = "\033[32m" DRIVER_NAME ":\033[0m ";
 		strcpy(bufferPointer, prefix);
 		bufferPointer += strlen(prefix);
 	}