diff --git a/src/db/DatabaseSong.cxx b/src/db/DatabaseSong.cxx
index 7ef42c53b..6eee88a2b 100644
--- a/src/db/DatabaseSong.cxx
+++ b/src/db/DatabaseSong.cxx
@@ -27,7 +27,7 @@
 #include <assert.h>
 
 DetachedSong
-DatabaseDetachSong(const Storage *storage, const LightSong &song)
+DatabaseDetachSong(const Storage *storage, const LightSong &song) noexcept
 {
 	DetachedSong detached(song);
 	assert(detached.IsInDatabase());
diff --git a/src/db/DatabaseSong.hxx b/src/db/DatabaseSong.hxx
index a4d41ca9d..13099de99 100644
--- a/src/db/DatabaseSong.hxx
+++ b/src/db/DatabaseSong.hxx
@@ -30,7 +30,7 @@ class DetachedSong;
  * instance.
  */
 DetachedSong
-DatabaseDetachSong(const Storage *storage, const LightSong &song);
+DatabaseDetachSong(const Storage *storage, const LightSong &song) noexcept;
 
 /**
  * Look up a song in the database and convert it to a #DetachedSong