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-rw-r--r--gnu/packages/gl.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/gl.scm b/gnu/packages/gl.scm
index 743932fd07..57e65e29b5 100644
--- a/gnu/packages/gl.scm
+++ b/gnu/packages/gl.scm
@@ -120,7 +120,7 @@ as ASCII text.")
      "Freeglut is a completely Free/OpenSourced alternative to
 the OpenGL Utility Toolkit (GLUT) library.  GLUT was originally
 written by Mark Kilgard to support the sample programs in the
-second edition OpenGL 'RedBook'.  Since then, GLUT has been used
+second edition OpenGL @code{RedBook}.  Since then, GLUT has been used
 in a wide variety of practical applications because it is simple,
 widely available and highly portable.