diff --git a/src/shared/Database/DatabaseMysql.cpp b/src/shared/Database/DatabaseMysql.cpp
index 3590ce078..24cfdee44 100644
--- a/src/shared/Database/DatabaseMysql.cpp
+++ b/src/shared/Database/DatabaseMysql.cpp
@@ -434,7 +434,7 @@ void MySqlPreparedStatement::addParam(unsigned int nIndex, const SqlStmtFieldDat
 
     MYSQL_BIND& pData = m_pInputArgs[nIndex];
 
-    my_bool bUnsigned = 0;
+    bool bUnsigned = false;
     enum_field_types dataType = ToMySQLType(data, bUnsigned);
 
     // setup MYSQL_BIND structure
@@ -479,24 +479,24 @@ bool MySqlPreparedStatement::execute()
     return true;
 }
 
-enum_field_types MySqlPreparedStatement::ToMySQLType(const SqlStmtFieldData& data, my_bool& bUnsigned)
+enum_field_types MySqlPreparedStatement::ToMySQLType(const SqlStmtFieldData& data, bool& bUnsigned)
 {
-    bUnsigned = 0;
+    bUnsigned = false;
     enum_field_types dataType = MYSQL_TYPE_NULL;
 
     switch (data.type())
     {
         case FIELD_NONE:    dataType = MYSQL_TYPE_NULL;                     break;
             // MySQL does not support MYSQL_TYPE_BIT as input type
-        case FIELD_BOOL:    // dataType = MYSQL_TYPE_BIT;      bUnsigned = 1;  break;
-        case FIELD_UI8:     dataType = MYSQL_TYPE_TINY;     bUnsigned = 1;  break;
+        case FIELD_BOOL:    // dataType = MYSQL_TYPE_BIT;      bUnsigned = true;  break;
+        case FIELD_UI8:     dataType = MYSQL_TYPE_TINY;     bUnsigned = true;  break;
         case FIELD_I8:      dataType = MYSQL_TYPE_TINY;                     break;
         case FIELD_I16:     dataType = MYSQL_TYPE_SHORT;                    break;
-        case FIELD_UI16:    dataType = MYSQL_TYPE_SHORT;    bUnsigned = 1;  break;
+        case FIELD_UI16:    dataType = MYSQL_TYPE_SHORT;    bUnsigned = true;  break;
         case FIELD_I32:     dataType = MYSQL_TYPE_LONG;                     break;
-        case FIELD_UI32:    dataType = MYSQL_TYPE_LONG;     bUnsigned = 1;  break;
+        case FIELD_UI32:    dataType = MYSQL_TYPE_LONG;     bUnsigned = true;  break;
         case FIELD_I64:     dataType = MYSQL_TYPE_LONGLONG;                 break;
-        case FIELD_UI64:    dataType = MYSQL_TYPE_LONGLONG; bUnsigned = 1;  break;
+        case FIELD_UI64:    dataType = MYSQL_TYPE_LONGLONG; bUnsigned = true;  break;
         case FIELD_FLOAT:   dataType = MYSQL_TYPE_FLOAT;                    break;
         case FIELD_DOUBLE:  dataType = MYSQL_TYPE_DOUBLE;                   break;
         case FIELD_STRING:  dataType = MYSQL_TYPE_STRING;                   break;
diff --git a/src/shared/Database/DatabaseMysql.h b/src/shared/Database/DatabaseMysql.h
index efc97cdfc..e38450bb6 100644
--- a/src/shared/Database/DatabaseMysql.h
+++ b/src/shared/Database/DatabaseMysql.h
@@ -96,7 +96,7 @@ class MySqlPreparedStatement : public SqlPreparedStatement
          * @param bUnsigned
          * @return enum_field_types
          */
-        static enum_field_types ToMySQLType(const SqlStmtFieldData& data, my_bool& bUnsigned);
+        static enum_field_types ToMySQLType(const SqlStmtFieldData& data, bool& bUnsigned);
 
     private:
         /**