diff --git a/README.md b/README.md
index fcf2d7c..d5ff602 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,17 @@
 # libxconv
 Lightweight ISO-6937 to UTF-8 conversion library.
 
-### SYNOPSIS
+##### SYNOPSIS
 > size\_t xconv(char \*inbuf, char \*outbuf, size\_t outbuflen);
 
-### DESCRIPTION
+##### DESCRIPTION
 
 > The xconv() function converts a sequence of characters in ISO-6937
 > encoding to UTF-8. 
 > 
 > If a UTF-8 sequence is found within the input string, processing is aborted.
 
-### RETURN VALUE
+##### RETURN VALUE
 
 > On successful conversion, the xconv() function returns the number of
 > characters placed into _outbuf_ excluding the string terminator.
@@ -20,7 +20,7 @@ Lightweight ISO-6937 to UTF-8 conversion library.
 > was found) then the function returns 0. In this case, the state of the
 > output buffer is undefined and it should not be used.
 
-### NOTES
+##### NOTES
 
 > This library was written to replace iconv() for a specific conversion task
 > in a small embedded environment with little memory or CPU time available.