diff --git a/demo/TestEET.dpr b/demo/TestEET.dpr
index e103c8e..235a1c8 100644
--- a/demo/TestEET.dpr
+++ b/demo/TestEET.dpr
@@ -14,6 +14,10 @@ program TestEET;
        USE_INDY - recompile SOAP comunications with Indy
        USE_LIBEET - use wrapper libeetsigner.dll - static compiled into one library (libxml2, xmlsec, openssl)
                     compiled with Visual Studio 2013 U5 Express - VC12 (VS Runtime 2013) needed MSVCR120.dll
+       USE_UCRT_LIBS - use libxml2 and xmlsec compiled with Visual Studio
+                  solution for time_t compatibility
+                  VS 2013 and lower using MSVCRxxx.dll
+                  VS 2015 and higher VCRUNTIME140.dll (ucrtbase.dll)
 
   (for other)
   Delphi Compiler Options -> Output Directory: ..\bin
@@ -25,6 +29,7 @@ program TestEET;
 
 
 uses
+  System.SimpleShareMem,
   Forms,
   u_main in 'u_main.pas' {TestEETForm},
   u_EETXMLSchema in '..\include\databinding\u_EETXMLSchema.pas';
diff --git a/include/xmlsec/libxml2.pas b/include/xmlsec/libxml2.pas
index 4fc3045..d217663 100644
--- a/include/xmlsec/libxml2.pas
+++ b/include/xmlsec/libxml2.pas
@@ -10,7 +10,7 @@ interface
 
 
 const
-{$IFDEF WIN32}
+{$IFDEF MSWINDOWS}
   LIBXML2_SO = {$IFNDEF USE_UCRT_LIBS}'libxml2-2.dll'{$ELSE}'libxml2.dll'{$ENDIF};
 {$ELSE}
   LIBXML2_SO = 'libxml2.so';
diff --git a/include/xmlsec/libxmlsec.pas b/include/xmlsec/libxmlsec.pas
index 29e1183..17d0a4d 100644
--- a/include/xmlsec/libxmlsec.pas
+++ b/include/xmlsec/libxmlsec.pas
@@ -10,14 +10,22 @@ interface
 uses libxml2, libxslt;
 
 const
-{$IFDEF WIN32}
-  LIBXMLSEC_SO = {$IFNDEF USE_UCRT_LIBS}'libxmlsec1.dll'{$ELSE}'libxmlsec.dll'{$ENDIF};
+{$IFDEF MSWINDOWS}
+  LIBXMLSEC_SO = {$IFDEF USE_UCRT_LIBS}'libxmlsec.dll'{$ELSE}'libxmlsec1.dll'{$ENDIF};
 {$ELSE}
   LIBXMLSEC_SO = 'libxmlsec.so';
 {$ENDIF}
 
+{$IFNDEF USE_UCRT_LIBS}
+  {$DEFINE _USE_32BIT_TIME_T}
+{$ENDIF}
+
 type
+{$IFDEF _USE_32BIT_TIME_T}
       time_t = LongInt;
+{$ELSE}
+      time_t = Int64;
+{$ENDIF}
       xmlSecSize = Cardinal;
       xmlSecSizePtr = ^xmlSecSize;
       xmlSecByte = Byte;