diff --git a/binr/radiff2/radiff2.c b/binr/radiff2/radiff2.c
index 6092046aad..7526cafc75 100644
--- a/binr/radiff2/radiff2.c
+++ b/binr/radiff2/radiff2.c
@@ -146,7 +146,7 @@ static int cb(RDiff *d, void *user, RDiffOp *op) {
 }
 
 static int show_help(int v) {
-	printf ("Usage: radiff2 [-abcCdjrspOv] [-g sym] [-t %%] [file] [file]\n");
+	printf ("Usage: radiff2 [-abcCdjrspOxv] [-g sym] [-t %%] [file] [file]\n");
 	if (v) printf (
 		"  -a [arch]  specify architecture plugin to use (x86, arm, ..)\n"
 		"  -A [-A]    run aaa or aaaa after loading each binary\n"
@@ -163,6 +163,7 @@ static int show_help(int v) {
 		"  -r         output in radare commands\n"
 		"  -s         compute text distance\n"
 		"  -t [0-100] set threshold for code diff (default is 70%%)\n"
+		"  -x         show two column hexdump diffing\n"
 		"  -v         show version information\n");
 	return 1;
 }
@@ -186,7 +187,7 @@ static void dump_cols (ut8 *a, int as, ut8 *b, int bs, int w) {
 		return ;
 	}
 	for (i = 0; i < sz; i += w) {
-		bool eq = memcmp (a + i, b + i, 8) == NULL;
+		bool eq = memcmp (a + i, b + i, w) == NULL;
 		if (eq) {
 			ctx--;
 			if (ctx == -1) {
diff --git a/man/radiff2.1 b/man/radiff2.1
index 5ec9f7b0bf..edc59b046a 100644
--- a/man/radiff2.1
+++ b/man/radiff2.1
@@ -1,11 +1,11 @@
-.Dd May 11, 2014
+.Dd Apr 21, 2016
 .Dt RADIFF2 1
 .Sh NAME
 .Nm RADIFF2
 .Nd unified binary diffing utility
 .Sh SYNOPSIS
 .Nm radiff2
-.Op Fl AabcCDOdrspvh
+.Op Fl AabcCdDhOrspxv
 .Op Fl t Ar 0-100
 .Op Fl g Ar sym
 .Ar file1
@@ -40,6 +40,8 @@ Do code diffing with all bytes instead of just the fixed opcode bytes
 Use physical addressing (io.va=0)
 .It Fl r
 Output in radare commands as a binary patch.
+.It Fl x
+Show two column hexdump diffing.
 .It Fl s
 Calculate text distance from two files.
 .It Fl t Ar 0\-100