diff --git a/src/tag/ReplayGainParser.cxx b/src/tag/ReplayGainParser.cxx
index 8d162bb8d..60a458e76 100644
--- a/src/tag/ReplayGainParser.cxx
+++ b/src/tag/ReplayGainParser.cxx
@@ -28,7 +28,7 @@
 
 template<typename T>
 static bool
-ParseReplayGainTagTemplate(ReplayGainInfo &info, const T t)
+ParseReplayGainTagTemplate(ReplayGainInfo &info, const T t) noexcept
 {
 	const char *value;
 
@@ -50,7 +50,8 @@ ParseReplayGainTagTemplate(ReplayGainInfo &info, const T t)
 }
 
 bool
-ParseReplayGainTag(ReplayGainInfo &info, const char *name, const char *value)
+ParseReplayGainTag(ReplayGainInfo &info,
+		   const char *name, const char *value) noexcept
 {
 	assert(name != nullptr);
 	assert(value != nullptr);
@@ -71,7 +72,7 @@ ParseReplayGainTag(ReplayGainInfo &info, const char *name, const char *value)
 }
 
 bool
-ParseReplayGainVorbis(ReplayGainInfo &info, StringView entry)
+ParseReplayGainVorbis(ReplayGainInfo &info, StringView entry) noexcept
 {
 	struct VorbisCommentEntry {
 		StringView entry;
diff --git a/src/tag/ReplayGainParser.hxx b/src/tag/ReplayGainParser.hxx
index ed612f0b7..b2fa052c9 100644
--- a/src/tag/ReplayGainParser.hxx
+++ b/src/tag/ReplayGainParser.hxx
@@ -24,9 +24,10 @@ struct StringView;
 struct ReplayGainInfo;
 
 bool
-ParseReplayGainTag(ReplayGainInfo &info, const char *name, const char *value);
+ParseReplayGainTag(ReplayGainInfo &info,
+		   const char *name, const char *value) noexcept;
 
 bool
-ParseReplayGainVorbis(ReplayGainInfo &info, StringView entry);
+ParseReplayGainVorbis(ReplayGainInfo &info, StringView entry) noexcept;
 
 #endif