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-rw-r--r--guix/diagnostics.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/diagnostics.scm b/guix/diagnostics.scm
index bf1ced8140..9f0d558f2f 100644
--- a/guix/diagnostics.scm
+++ b/guix/diagnostics.scm
@@ -232,7 +232,7 @@ macro-expansion time."
 by Guile's `source-properties', `frame-source', `current-source-location',
 etc."
   ;; In accordance with the GCS, start line and column numbers at 1.  Note
-  ;; that unlike LINE and `port-column', COL is actually 1-indexed here...
+  ;; that unlike LINE and `port-column', COL is actually 0-indexed here...
   (match loc
     ((('line . line) ('column . col) ('filename . file)) ;common case
      (and file line col