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-rw-r--r--src/libutil/args.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libutil/args.hh b/src/libutil/args.hh
index aa0f45a653a8..ac12f8be633a 100644
--- a/src/libutil/args.hh
+++ b/src/libutil/args.hh
@@ -126,7 +126,7 @@ public:
         mkFlag(shortName, longName, {"N"}, description, 1, [=](Strings ss) {
             I n;
             if (!string2Int(ss.front(), n))
-                throw UsageError(format("flag '--%1%' requires a integer argument") % longName);
+                throw UsageError(format("flag ‘--%1%’ requires a integer argument") % longName);
             fun(n);
         });
     }