diff --git a/checksum/checksum/ext4checksum.h b/checksum/checksum/ext4checksum.h
index a0c99a3..ba8754e 100644
--- a/checksum/checksum/ext4checksum.h
+++ b/checksum/checksum/ext4checksum.h
@@ -1,4 +1,4 @@
-#include <cstdint>
+#include <stdint.h>
 
 #ifndef EXT4CHECKSUM_H
 #define EXT4CHECKSUM_H
diff --git a/checksum/checksum/test_crc b/checksum/checksum/test_crc
new file mode 100755
index 0000000..07440c6
Binary files /dev/null and b/checksum/checksum/test_crc differ
diff --git a/src/ext4/checksum/ext4checksum.h b/src/ext4/checksum/ext4checksum.h
index 35dcb48..ae00b32 100644
--- a/src/ext4/checksum/ext4checksum.h
+++ b/src/ext4/checksum/ext4checksum.h
@@ -1,5 +1,4 @@
-#include <cstdint>
-
+#include <stdint.h>
 #ifndef EXT4CHECKSUM_H
 #define EXT4CHECKSUM_H