diff --git a/.gitignore b/.gitignore
index 9d79c41..82117d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,4 +54,6 @@ test/*
 *.o
 *.save
 *.dbf
-*.so
\ No newline at end of file
+*.so
+build
+.vscode
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..a204c59
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.28)
+project(dbf)
+set(CMAKE_CXX_STANDARD 17)
+
+set(CMAKE_CXX_FLAGS -O3)
+
+include_directories(include)
+
+add_library(dbf SHARED src/DBaseColDef.cpp
+            src/DBaseField.cpp
+            src/DBaseFieldProperty.cpp
+            src/DBaseFile.cpp
+            src/DBaseHeader.cpp
+            src/DBaseRecord.cpp            
+)
\ No newline at end of file
diff --git a/include/DBaseFile.h b/include/DBaseFile.h
index 9b2cfec..8f67123 100644
--- a/include/DBaseFile.h
+++ b/include/DBaseFile.h
@@ -50,6 +50,8 @@ struct DBaseFile
         unsigned int m_totalHeaderLength = 0;
         /**< Header contents (read raw from disk)*/
         std::string m_headerData = "";
+        /**<special block for visual Foxpro only> */
+        unsigned int m_dbcSize = 0;
 };
 
 /**< \section   Exceptions */
diff --git a/src/DBaseFile.cpp b/src/DBaseFile.cpp
index 0588377..1398209 100644
--- a/src/DBaseFile.cpp
+++ b/src/DBaseFile.cpp
@@ -18,6 +18,8 @@
 
 using namespace std;
 
+constexpr unsigned int DBC_SIZE = 263;
+
 /** \brief Constructs dBase structure from given file.
  *  \param Name of the dBase file
  *  \return True if succeded. Otherwise throws exception
@@ -39,8 +41,13 @@ bool DBaseFile::openFile(const std::string fileName) {
     //Read file contents into heap memory
     readHeader(iFile);
 
+    // compatable with viso
+    if (m_header.m_fileType.find("Visual FoxPro") != std::string::npos) {
+        m_dbcSize = DBC_SIZE;
+    }
+
     //Check header
-    m_colDefLength = m_header.m_numBytesInHeader - m_totalHeaderLength -1;
+    m_colDefLength = m_header.m_numBytesInHeader - m_fileHeaderLength - m_dbcSize -1;
     validateBlockSize(m_colDefBlockSize, m_colDefLength);
     if(!(m_headerData.empty())) { m_header.parse(m_headerData);}
     validateBlockSize(m_colDefBlockSize, m_colDefLength);
@@ -65,7 +72,7 @@ void DBaseFile::readHeader(std::ifstream& iFile) {
 ///Read column definition
 void DBaseFile::readColDef(std::ifstream& iFile, DBaseHeader& iFileHeader) {
     //omit terminating byte at header end
-    unsigned int headerLengthWOTerminatingChar = iFileHeader.m_numBytesInHeader - 1;
+    unsigned int headerLengthWOTerminatingChar = iFileHeader.m_numBytesInHeader - 1 - (m_dbcSize + 1);
     iFile.seekg((m_fileHeaderLength), iFile.beg);
     std::string colDefBuf((headerLengthWOTerminatingChar - m_fileHeaderLength), ' ');
     iFile.read(&(colDefBuf.at(0)), (headerLengthWOTerminatingChar - m_fileHeaderLength));