diff --git a/src/playlist/PlaylistPlugin.cxx b/src/playlist/PlaylistPlugin.cxx
index a7022b203..c453b9719 100644
--- a/src/playlist/PlaylistPlugin.cxx
+++ b/src/playlist/PlaylistPlugin.cxx
@@ -19,24 +19,23 @@
 
 #include "PlaylistPlugin.hxx"
 #include "util/StringUtil.hxx"
-#include "util/StringView.hxx"
 
 bool
-PlaylistPlugin::SupportsScheme(StringView scheme) const noexcept
+PlaylistPlugin::SupportsScheme(std::string_view scheme) const noexcept
 {
 	return schemes != nullptr &&
 		StringArrayContainsCase(schemes, scheme);
 }
 
 bool
-PlaylistPlugin::SupportsSuffix(StringView suffix) const noexcept
+PlaylistPlugin::SupportsSuffix(std::string_view suffix) const noexcept
 {
 	return suffixes != nullptr &&
 		StringArrayContainsCase(suffixes, suffix);
 }
 
 bool
-PlaylistPlugin::SupportsMimeType(StringView mime_type) const noexcept
+PlaylistPlugin::SupportsMimeType(std::string_view mime_type) const noexcept
 {
 	return mime_types != nullptr &&
 		StringArrayContainsCase(mime_types, mime_type);
diff --git a/src/playlist/PlaylistPlugin.hxx b/src/playlist/PlaylistPlugin.hxx
index be3644caa..d9816a937 100644
--- a/src/playlist/PlaylistPlugin.hxx
+++ b/src/playlist/PlaylistPlugin.hxx
@@ -24,9 +24,10 @@
 #include "thread/Mutex.hxx"
 #include "util/Compiler.h"
 
+#include <string_view>
+
 struct ConfigBlock;
 struct Tag;
-struct StringView;
 class SongEnumerator;
 
 struct PlaylistPlugin {
@@ -120,19 +121,19 @@ struct PlaylistPlugin {
 	 * Does the plugin announce the specified URI scheme?
 	 */
 	gcc_pure gcc_nonnull_all
-	bool SupportsScheme(StringView scheme) const noexcept;
+	bool SupportsScheme(std::string_view scheme) const noexcept;
 
 	/**
 	 * Does the plugin announce the specified file name suffix?
 	 */
 	gcc_pure gcc_nonnull_all
-	bool SupportsSuffix(StringView suffix) const noexcept;
+	bool SupportsSuffix(std::string_view suffix) const noexcept;
 
 	/**
 	 * Does the plugin announce the specified MIME type?
 	 */
 	gcc_pure gcc_nonnull_all
-	bool SupportsMimeType(StringView mime_type) const noexcept;
+	bool SupportsMimeType(std::string_view mime_type) const noexcept;
 };
 
 /**