diff --git a/input_parsing.cpp b/input_parsing.cpp
index 102a71c..7c7922d 100644
--- a/input_parsing.cpp
+++ b/input_parsing.cpp
@@ -41,7 +41,7 @@ ProgramOptions get_params(int argc, char *argv[])
 			break;
 
 			default:
-			std::cerr << "Incorrect character code returned: %d" << option;
+			std::cerr << "Incorrect character code returned: %d\n" << option;
 		}
 	}