diff --git a/matroska/KaxBlock.h b/matroska/KaxBlock.h
index c9530a43..7a27cdee 100644
--- a/matroska/KaxBlock.h
+++ b/matroska/KaxBlock.h
@@ -184,10 +184,6 @@ class MATROSKA_DLL_API KaxInternalBlock : public libebml::EbmlBinary {
     {}
     KaxInternalBlock(const KaxInternalBlock & ElementToClone);
     ~KaxInternalBlock() override;
-    bool SizeIsValid(std::uint64_t size) const override
-    {
-      return size >= 4; /// for the moment
-    }
     static inline bool SizeIsValid(std::uint64_t size)
     {
       return size >= 4; /// for the moment
diff --git a/matroska/KaxSemantic.h b/matroska/KaxSemantic.h
index 614602d3..33e08ff4 100644
--- a/matroska/KaxSemantic.h
+++ b/matroska/KaxSemantic.h
@@ -22,7 +22,7 @@
 #include "matroska/KaxDefines.h"
 
 namespace libmatroska {
-DECLARE_MKX_BINARY_LENGTH(KaxSeekID, 4)
+DECLARE_MKX_BINARY(KaxSeekID)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 4;}
 };
 
@@ -32,28 +32,28 @@ DECLARE_MKX_UINTEGER(KaxSeekPosition)
 DECLARE_MKX_MASTER(KaxInfo)
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxSegmentUID, 16)
+DECLARE_MKX_BINARY(KaxSegmentUID)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
 };
 
 DECLARE_MKX_UNISTRING(KaxSegmentFilename)
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxPrevUID, 16)
+DECLARE_MKX_BINARY(KaxPrevUID)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
 };
 
 DECLARE_MKX_UNISTRING(KaxPrevFilename)
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxNextUID, 16)
+DECLARE_MKX_BINARY(KaxNextUID)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
 };
 
 DECLARE_MKX_UNISTRING(KaxNextFilename)
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxSegmentFamily, 16)
+DECLARE_MKX_BINARY(KaxSegmentFamily)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
 };
 
@@ -391,7 +391,7 @@ DECLARE_MKX_UINTEGER_DEF(KaxVideoAspectRatio)
   libebml::filepos_t RenderData(libebml::IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter) override;
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxVideoColourSpace, 4)
+DECLARE_MKX_BINARY(KaxVideoColourSpace)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 4;}
 };
 
@@ -547,7 +547,7 @@ DECLARE_MKX_UINTEGER(KaxTrickTrackUID)
   libebml::filepos_t RenderData(libebml::IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter) override;
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxTrickTrackSegmentUID, 16)
+DECLARE_MKX_BINARY(KaxTrickTrackSegmentUID)
 public:
   libebml::filepos_t RenderData(libebml::IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter) override;
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
@@ -563,7 +563,7 @@ DECLARE_MKX_UINTEGER(KaxTrickMasterTrackUID)
   libebml::filepos_t RenderData(libebml::IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter) override;
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxTrickMasterTrackSegmentUID, 16)
+DECLARE_MKX_BINARY(KaxTrickMasterTrackSegmentUID)
 public:
   libebml::filepos_t RenderData(libebml::IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter) override;
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
@@ -751,7 +751,7 @@ DECLARE_MKX_UINTEGER_DEF(KaxChapterFlagHidden)
 DECLARE_MKX_UINTEGER_DEF(KaxChapterFlagEnabled)
 };
 
-DECLARE_MKX_BINARY_LENGTH(KaxChapterSegmentUID, 16)
+DECLARE_MKX_BINARY(KaxChapterSegmentUID)
   static inline bool SizeIsValid(std::uint64_t Size) {return Size == 16;}
 };
 
@@ -1173,7 +1173,7 @@ typedef enum {
  *Indicate what type of content the ChapterAtom contains and might be skipped. It can be used to automatically skip content based on the type.
 If a `ChapterAtom` is inside a `ChapterAtom` that has a `ChapterSkipType` set, it **MUST NOT** have a `ChapterSkipType` or have a `ChapterSkipType` with the same value as it's parent `ChapterAtom`.
 If the `ChapterAtom` doesn't contain a `ChapterTimeEnd`, the value of the `ChapterSkipType` is only valid until the next `ChapterAtom` with a `ChapterSkipType` value or the end of the file.
-    
+
  */
 typedef enum {
   MATROSKA_CHAPTERSKIPTYPE_NO_SKIPPING      = 0, // Content which should not be skipped.