diff --git a/ebml/EbmlBinary.h b/ebml/EbmlBinary.h
index 49555327..e57b0958 100644
--- a/ebml/EbmlBinary.h
+++ b/ebml/EbmlBinary.h
@@ -30,7 +30,6 @@ class EBML_DLL_API EbmlBinary : public EbmlElement {
     EbmlBinary& operator=(const EbmlBinary & ElementToClone);
     ~EbmlBinary() override;
 
-    bool SizeIsValid(std::uint64_t size) const override {return size < 0x7FFFFFFF;} // we don't mind about what's inside
     static inline bool SizeIsValid(std::uint64_t size) {return size < 0x7FFFFFFF;} // we don't mind about what's inside
 
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
diff --git a/ebml/EbmlCrc32.h b/ebml/EbmlCrc32.h
index e9b7cec8..4b456e82 100644
--- a/ebml/EbmlCrc32.h
+++ b/ebml/EbmlCrc32.h
@@ -13,7 +13,7 @@
 
 namespace libebml {
 
-DECLARE_EBML_BINARY_LENGTH(EbmlCrc32, 4)
+DECLARE_EBML_BINARY(EbmlCrc32)
   public:
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
     filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;
diff --git a/ebml/EbmlDate.h b/ebml/EbmlDate.h
index 4ab2395a..201453bd 100644
--- a/ebml/EbmlDate.h
+++ b/ebml/EbmlDate.h
@@ -41,8 +41,6 @@ class EBML_DLL_API EbmlDate : public EbmlElementDefaultSameStorage<std::int64_t>
     std::int64_t GetEpochDate() const {return EbmlToEpoch(EbmlElementDefaultSameStorage<std::int64_t>::GetValue());}
     std::int64_t GetValue() const {return GetEpochDate();}
 
-    bool SizeIsValid(std::uint64_t size) const override {return size == 8 || size == 0;}
-
     static inline bool SizeIsValid(std::uint64_t size) {return size == 8 || size == 0;}
 
     /*!
diff --git a/ebml/EbmlElement.h b/ebml/EbmlElement.h
index ccda413a..18292996 100644
--- a/ebml/EbmlElement.h
+++ b/ebml/EbmlElement.h
@@ -187,10 +187,6 @@ class DllApi x : public BaseClass { \
 #define DECLARE_xxx_BINARY(x,DllApi)    \
   DECLARE_xxx_BASE(x, DllApi, libebml::EbmlBinary)
 
-#define DECLARE_xxx_BINARY_LENGTH(x,len,DllApi)    \
-  DECLARE_xxx_BASE(x, DllApi, libebml::EbmlBinary) \
-  bool SizeIsValid(std::uint64_t size) const override {return size == len;}
-
 #define DECLARE_xxx_UINTEGER(x,DllApi)  \
   DECLARE_xxx_BASE_NODEFAULT(x, DllApi, libebml::EbmlUInteger, std::uint64_t)
 
@@ -231,7 +227,6 @@ class DllApi x : public BaseClass { \
 #define DECLARE_EBML_UINTEGER_DEF(x)  DECLARE_xxx_UINTEGER_DEF(x,EBML_DLL_API)
 #define DECLARE_EBML_STRING_DEF(x)    DECLARE_xxx_STRING_DEF(  x,EBML_DLL_API)
 #define DECLARE_EBML_BINARY(x)    DECLARE_xxx_BINARY(  x,EBML_DLL_API)
-#define DECLARE_EBML_BINARY_LENGTH(x,len)    DECLARE_xxx_BINARY_LENGTH(x,len,EBML_DLL_API)
 
 #define EBML_CONCRETE_CLASS(Type) \
     public: \
@@ -509,7 +504,6 @@ class EBML_DLL_API EbmlElement {
         return false;
     }
 
-    virtual bool SizeIsValid(std::uint64_t) const = 0;
     bool ValidateSize() const { return ElementSpec().IsSizeValid(GetSize()); }
 
     std::uint64_t GetElementPosition() const {
diff --git a/ebml/EbmlFloat.h b/ebml/EbmlFloat.h
index af3e319a..7189aa29 100644
--- a/ebml/EbmlFloat.h
+++ b/ebml/EbmlFloat.h
@@ -25,11 +25,6 @@ class EBML_DLL_API EbmlFloat : public EbmlElementDefaultSameStorage<double> {
 
     EbmlFloat(const EbmlCallbacksDefault<double> &, Precision prec = FLOAT_32);
 
-    bool SizeIsValid(std::uint64_t size) const override
-    {
-      return (size == 4 || size == 8);
-    }
-
     static inline bool SizeIsValid(std::uint64_t size)
     {
       return (size == 4 || size == 8);
diff --git a/ebml/EbmlMaster.h b/ebml/EbmlMaster.h
index 24a5a597..39cde20e 100644
--- a/ebml/EbmlMaster.h
+++ b/ebml/EbmlMaster.h
@@ -31,7 +31,6 @@ class EBML_DLL_API EbmlMaster : public EbmlElement {
     explicit EbmlMaster(const EbmlCallbacks &, bool bSizeIsKnown = true);
     EbmlMaster(const EbmlMaster & ElementToClone);
     EbmlMaster& operator=(const EbmlMaster&) = delete;
-    bool SizeIsValid(std::uint64_t /*size*/) const override {return true;}
     static inline bool SizeIsValid(std::uint64_t /*size*/) {return true;}
 
     /*!
diff --git a/ebml/EbmlSInteger.h b/ebml/EbmlSInteger.h
index ddcbf2ab..3c2d1e33 100644
--- a/ebml/EbmlSInteger.h
+++ b/ebml/EbmlSInteger.h
@@ -31,7 +31,6 @@ class EBML_DLL_API EbmlSInteger : public EbmlElementDefaultSameStorage<std::int6
     */
         void SetDefaultSize(std::uint64_t nDefaultSize = DEFAULT_INT_SIZE) override {EbmlElement::SetDefaultSize(nDefaultSize); SetSize_(nDefaultSize);}
 
-    bool SizeIsValid(std::uint64_t size) const override {return size <= 8;}
     static inline bool SizeIsValid(std::uint64_t size) {return size <= 8;}
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
     filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;
diff --git a/ebml/EbmlString.h b/ebml/EbmlString.h
index 923995f9..6c422d28 100644
--- a/ebml/EbmlString.h
+++ b/ebml/EbmlString.h
@@ -22,7 +22,6 @@ class EBML_DLL_API EbmlString : public EbmlElementDefaultStorage<const char *, s
   public:
     EbmlString(const EbmlCallbacksDefault<const char *> &);
 
-    bool SizeIsValid(std::uint64_t size) const override {return size < 0x7FFFFFFF;} // any size is possible
     static inline bool SizeIsValid(std::uint64_t size)  {return size < 0x7FFFFFFF;} // any size is possible
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
     filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;
diff --git a/ebml/EbmlUInteger.h b/ebml/EbmlUInteger.h
index 8aee81c7..bb22e12c 100644
--- a/ebml/EbmlUInteger.h
+++ b/ebml/EbmlUInteger.h
@@ -29,7 +29,6 @@ class EBML_DLL_API EbmlUInteger : public EbmlElementDefaultSameStorage<std::uint
     */
     void SetDefaultSize(std::uint64_t nDefaultSize = DEFAULT_UINT_SIZE) override {EbmlElement::SetDefaultSize(nDefaultSize); SetSize_(nDefaultSize);}
 
-    bool SizeIsValid(std::uint64_t size) const override {return size <= 8;}
     static inline bool SizeIsValid(std::uint64_t size) {return size <= 8;}
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
     filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;
diff --git a/ebml/EbmlUnicodeString.h b/ebml/EbmlUnicodeString.h
index 72c67260..c40f091e 100644
--- a/ebml/EbmlUnicodeString.h
+++ b/ebml/EbmlUnicodeString.h
@@ -68,7 +68,6 @@ class EBML_DLL_API EbmlUnicodeString : public EbmlElementDefaultStorage<const wc
   public:
     EbmlUnicodeString(const EbmlCallbacksDefault<const wchar_t *> &);
 
-    bool SizeIsValid(std::uint64_t /*size*/) const override {return true;} // any size is possible
     static inline bool SizeIsValid(std::uint64_t /*size*/)  {return true;} // any size is possible
     filepos_t RenderData(IOCallback & output, bool bForceRender, const ShouldWrite & writeFilter = WriteSkipDefault) override;
     filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;