diff --git a/example/main.c b/example/main.c
index de43bdf..041d30d 100644
--- a/example/main.c
+++ b/example/main.c
@@ -21,6 +21,18 @@ static ft_table_t *create_basic_table(void)
     return table;
 }
 
+void print_char_str(const char *str)
+{
+    printf("Char_repr:\n");
+    while (*str) {
+        if (*str == '\n')
+            printf("\n");
+        printf("%x", (unsigned)*str);
+        str++;
+    }
+
+}
+
 int main(void)
 {
     int result = 0;
@@ -101,61 +113,73 @@ int main(void)
     ft_set_default_border_style(FT_BASIC_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_SIMPLE_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_PLAIN_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_DOT_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_EMPTY_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_SOLID_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_SOLID_ROUND_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_DOUBLE_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_DOUBLE2_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_BOLD_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_BOLD2_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     ft_set_default_border_style(FT_FRAME_STYLE);
     table = create_basic_table();
     printf("Table:\n%s\n", ft_to_string(table));
+    print_char_str(ft_to_string(table));
     ft_destroy_table(table);
 
     /* Debug */
diff --git a/lib/fort.c b/lib/fort.c
index 1bfea72..a658f57 100644
--- a/lib/fort.c
+++ b/lib/fort.c
@@ -2071,11 +2071,9 @@ int ft_table_wwrite_ln(ft_table_t *table, size_t rows, size_t cols, const wchar_
 const char *ft_to_string(const ft_table_t *table)
 {
     typedef char char_type;
-//    const char_type *empty_string = "";
     const enum str_buf_type buf_type = CharBuf;
     const char *space_char = " ";
     const char *new_line_char = "\n";
-#define cur_F_STRDUP F_STRDUP
 #define EMPTY_STRING ""
     int (*snprintf_row_)(const fort_row_t *, char *, size_t, size_t *, size_t, size_t, const context_t *) = snprintf_row;
     int (*print_row_separator_)(char *, size_t,
@@ -2166,7 +2164,6 @@ clear:
     F_FREE(row_height_arr);
 //    F_FREE(buffer);
     return NULL;
-#undef cur_F_STRDUP
 #undef EMPTY_STRING
 }
 
@@ -2176,11 +2173,9 @@ clear:
 const wchar_t *ft_to_wstring(const ft_table_t *table)
 {
     typedef wchar_t char_type;
-//    const char_type *empty_string = L"";
     const enum str_buf_type buf_type = WCharBuf;
     const char *space_char = " ";
     const char *new_line_char = "\n";
-#define cur_F_STRDUP F_WCSDUP
 #define EMPTY_STRING L""
     int (*snprintf_row_)(const fort_row_t *, wchar_t *, size_t, size_t *, size_t, size_t, const context_t *) = wsnprintf_row;
     int (*print_row_separator_)(wchar_t *, size_t,
@@ -2273,7 +2268,6 @@ clear:
     F_FREE(row_height_arr);
 //    F_FREE(buffer);
     return NULL;
-#undef cur_F_STRDUP
 #undef EMPTY_STRING
 }
 
diff --git a/src/fort_impl.c b/src/fort_impl.c
index b80c137..1a9041d 100644
--- a/src/fort_impl.c
+++ b/src/fort_impl.c
@@ -535,11 +535,9 @@ int ft_table_wwrite_ln(ft_table_t *table, size_t rows, size_t cols, const wchar_
 const char *ft_to_string(const ft_table_t *table)
 {
     typedef char char_type;
-//    const char_type *empty_string = "";
     const enum str_buf_type buf_type = CharBuf;
     const char *space_char = " ";
     const char *new_line_char = "\n";
-#define cur_F_STRDUP F_STRDUP
 #define EMPTY_STRING ""
     int (*snprintf_row_)(const fort_row_t *, char *, size_t, size_t *, size_t, size_t, const context_t *) = snprintf_row;
     int (*print_row_separator_)(char *, size_t,
@@ -630,7 +628,6 @@ clear:
     F_FREE(row_height_arr);
 //    F_FREE(buffer);
     return NULL;
-#undef cur_F_STRDUP
 #undef EMPTY_STRING
 }
 
@@ -640,11 +637,9 @@ clear:
 const wchar_t *ft_to_wstring(const ft_table_t *table)
 {
     typedef wchar_t char_type;
-//    const char_type *empty_string = L"";
     const enum str_buf_type buf_type = WCharBuf;
     const char *space_char = " ";
     const char *new_line_char = "\n";
-#define cur_F_STRDUP F_WCSDUP
 #define EMPTY_STRING L""
     int (*snprintf_row_)(const fort_row_t *, wchar_t *, size_t, size_t *, size_t, size_t, const context_t *) = wsnprintf_row;
     int (*print_row_separator_)(wchar_t *, size_t,
@@ -737,7 +732,6 @@ clear:
     F_FREE(row_height_arr);
 //    F_FREE(buffer);
     return NULL;
-#undef cur_F_STRDUP
 #undef EMPTY_STRING
 }