diff --git a/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h b/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
index c838d566c76..130a2353a3a 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
@@ -30,7 +30,7 @@
 #include <CGAL/Handle.h>
 #include <CGAL/misc.h>
 
-                                                                                            c
+                                                                                            cc
 /*
  * This file contains the definition of the number type Lazy_exact_nt<ET>,
  * where ET is an exact number type (must provide the exact operations needed).