diff --git a/ide/fpregs.pas b/ide/fpregs.pas
index b32c4de22b..4b37708a2b 100644
--- a/ide/fpregs.pas
+++ b/ide/fpregs.pas
@@ -18,6 +18,7 @@ interface
 implementation
 end.
 {$else NODEBUG}
+interface
 uses
 {$ifdef win32}
   Windows,
diff --git a/rtl/bsd/sysctl.pp b/rtl/bsd/sysctl.pp
index a3d916061c..dce63aac8a 100644
--- a/rtl/bsd/sysctl.pp
+++ b/rtl/bsd/sysctl.pp
@@ -1,5 +1,6 @@
 Unit sysctl;
 
+{
    This file is part of the Free Pascal run time library.
    (c) 2002 by Marco van de Voort
    member of the Free Pascal development team.
diff --git a/rtl/darwin/console.pp b/rtl/darwin/console.pp
index 375209f268..12d6206196 100644
--- a/rtl/darwin/console.pp
+++ b/rtl/darwin/console.pp
@@ -1,3 +1,4 @@
+{
    This file is part of the Free Pascal run time library.
    (c) 2000 by Marco van de Voort
    member of the Free Pascal development team.