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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 37e780dd1748..fd910b965ccc 100644
--- a/src/libutil/args.hh
+++ b/src/libutil/args.hh
@@ -158,7 +158,7 @@ public:
             .handler([=](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);
             });
     }