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-rw-r--r--src/Queue.hxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Queue.hxx b/src/Queue.hxx
index da90d4a3d..48ee69cc8 100644
--- a/src/Queue.hxx
+++ b/src/Queue.hxx
@@ -103,7 +103,7 @@ struct queue {
/** random number generator for shuffle and random mode */
LazyRandomEngine rand;
- queue(unsigned max_length);
+ explicit queue(unsigned max_length);
/**
* Deinitializes a queue object. It does not free the queue