diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3254c77..61d12e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -174,7 +174,7 @@ set(META_APP_URL "https://github.com/${META_APP_AUTHOR}/${META_PROJECT_NAME}")
 set(META_APP_DESCRIPTION "C++ library for reading and writing MP4 (iTunes), ID3, Vorbis, Opus, FLAC and Matroska tags")
 set(META_VERSION_MAJOR 7)
 set(META_VERSION_MINOR 0)
-set(META_VERSION_PATCH 2)
+set(META_VERSION_PATCH 3)
 set(META_PUBLIC_SHARED_LIB_DEPENDS c++utilities)
 set(META_PUBLIC_STATIC_LIB_DEPENDS c++utilities_static)
 set(META_PRIVATE_COMPILE_DEFINITIONS LEGACY_API)
diff --git a/fieldbasedtag.h b/fieldbasedtag.h
index 351fe62..6d6811f 100644
--- a/fieldbasedtag.h
+++ b/fieldbasedtag.h
@@ -305,7 +305,7 @@ inline typename FieldMapBasedTag<ImplementationType>::IdentifierType FieldMapBas
  */
 template <class ImplementationType> inline KnownField FieldMapBasedTag<ImplementationType>::knownField(const IdentifierType &id) const
 {
-    return static_cast<FieldMapBasedTag<ImplementationType> *>(this)->internallyGetKnownField(id);
+    return static_cast<const ImplementationType *>(this)->internallyGetKnownField(id);
 }
 
 template <class ImplementationType> inline bool FieldMapBasedTag<ImplementationType>::supportsField(KnownField field) const