diff --git a/Python/ceval.c b/Python/ceval.c
index ce4b67a..a1c8190 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -775,7 +775,8 @@
 				PUSH(x);
 				continue;
 			default:
-				Py_FatalError("invalid argument to DUP_TOPX (bytecode corruption?)");
+				Py_FatalError("invalid argument to DUP_TOPX"
+					      " (bytecode corruption?)");
 			}
 			break;