diff --git a/src/main.cpp b/src/main.cpp
index 0e526a9..b31eb08 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,7 +25,7 @@ namespace
 		std::string cmd = "\xFF\xFF\xFF\xFFpatchkill";
 		const auto line = [&cmd](const std::string& text)
 		{
-			cmd.append(" ");
+			cmd.push_back(' ');
 			cmd.append(text);
 		};