diff --git a/editors/diff.c b/editors/diff.c
index 77e8f1d07..83de52753 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -479,7 +479,7 @@ start:
 	for (; suff < nlen[0] - pref && suff < nlen[1] - pref &&
 	       nfile[0][nlen[0] - suff].value == nfile[1][nlen[1] - suff].value;
 	       suff++);
-	/* Arrays are pruned by the suffix and prefix lenght,
+	/* Arrays are pruned by the suffix and prefix length,
 	 * the result being sorted and stored in sfile[fileno],
 	 * and their sizes are stored in slen[fileno]
 	 */