diff --git a/gnu/services/cuirass.scm b/gnu/services/cuirass.scm
index c5e9fcbb22..a9ef9881b3 100644
--- a/gnu/services/cuirass.scm
+++ b/gnu/services/cuirass.scm
@@ -6,7 +6,7 @@
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
-;;; GNU Guix is free software: you can redistribute it and/or modify
+;;; GNU Guix is free software; you can redistribute it and/or modify
 ;;; it under the terms of the GNU General Public License as published by
 ;;; the Free Software Foundation, either version 3 of the License, or
 ;;; (at your option) any later version.
diff --git a/gnu/services/pm.scm b/gnu/services/pm.scm
index d40cb993e2..3817bd09de 100644
--- a/gnu/services/pm.scm
+++ b/gnu/services/pm.scm
@@ -3,7 +3,7 @@
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
-;;; GNU Guix is free software: you can redistribute it and/or modify
+;;; GNU Guix is free software; you can redistribute it and/or modify
 ;;; it under the terms of the GNU General Public License as published by
 ;;; the Free Software Foundation, either version 3 of the License, or
 ;;; (at your option) any later version.