diff --git a/sysutils/memtester/Makefile b/sysutils/memtester/Makefile
index 2d1201d64ef..afa1e44c2d7 100644
--- a/sysutils/memtester/Makefile
+++ b/sysutils/memtester/Makefile
@@ -1,6 +1,6 @@
 COMMENT=	utility to test for memory faults
 
-DISTNAME=	memtester-4.5.1
+DISTNAME=	memtester-4.6.0
 CATEGORIES=	sysutils
 
 HOMEPAGE=	http://pyropus.ca/software/memtester/
diff --git a/sysutils/memtester/distinfo b/sysutils/memtester/distinfo
index 1bee049dc6c..613b82470d3 100644
--- a/sysutils/memtester/distinfo
+++ b/sysutils/memtester/distinfo
@@ -1,2 +1,2 @@
-SHA256 (memtester-4.5.1.tar.gz) = HF/COCV2wISzFM/TNNEnpmwgvWOJLKyfRFvB2LTKWkc=
-SIZE (memtester-4.5.1.tar.gz) = 23655
+SHA256 (memtester-4.6.0.tar.gz) = yf5Ot+gMjO9SAvkGXEwGgvVhZkfARV6RalcA+Y49uy4=
+SIZE (memtester-4.6.0.tar.gz) = 24229
diff --git a/sysutils/memtester/patches/patch-memtester_c b/sysutils/memtester/patches/patch-memtester_c
index 21c44da88a9..49d14b1162c 100644
--- a/sysutils/memtester/patches/patch-memtester_c
+++ b/sysutils/memtester/patches/patch-memtester_c
@@ -1,6 +1,7 @@
---- memtester.c.orig	Sat Jun  9 23:45:22 2012
-+++ memtester.c	Fri Aug 26 23:32:43 2016
-@@ -342,7 +342,7 @@ int main(int argc, char **argv) {
+Index: memtester.c
+--- memtester.c.orig
++++ memtester.c
+@@ -343,7 +343,7 @@ int main(int argc, char **argv) {
                          wantbytes = wantbytes_orig;
                          break;
                      default:
diff --git a/sysutils/memtester/patches/patch-sizes_h b/sysutils/memtester/patches/patch-sizes_h
index 808f0d338ea..7b68f5db19e 100644
--- a/sysutils/memtester/patches/patch-sizes_h
+++ b/sysutils/memtester/patches/patch-sizes_h
@@ -1,5 +1,6 @@
---- sizes.h.orig	Sun Feb 28 18:24:56 2010
-+++ sizes.h	Tue Feb 17 22:36:10 2015
+Index: sizes.h
+--- sizes.h.orig
++++ sizes.h
 @@ -14,7 +14,7 @@
  
  #include <limits.h>
@@ -8,4 +9,4 @@
 +#define rand32() arc4random()
  
  #if (ULONG_MAX == 4294967295UL)
-     #define rand_ul() rand32()
+     #define FMT_TARGET "0x%08lx"
diff --git a/sysutils/memtester/patches/patch-tests_c b/sysutils/memtester/patches/patch-tests_c
deleted file mode 100644
index 3474b1f9b22..00000000000
--- a/sysutils/memtester/patches/patch-tests_c
+++ /dev/null
@@ -1,21 +0,0 @@
-Index: tests.c
---- tests.c.orig
-+++ tests.c
-@@ -52,7 +52,7 @@ int compare_regions(ulv *bufa, ulv *bufb, size_t count
-                 physaddr = physaddrbase + (i * sizeof(ul));
-                 fprintf(stderr, 
-                         "FAILURE: 0x%08lx != 0x%08lx at physical address "
--                        "0x%08lx.\n", 
-+                        "0x%08llx.\n", 
-                         (ul) *p1, (ul) *p2, physaddr);
-             } else {
-                 fprintf(stderr, 
-@@ -93,7 +93,7 @@ int test_stuck_address(ulv *bufa, size_t count) {
-                     physaddr = physaddrbase + (i * sizeof(ul));
-                     fprintf(stderr, 
-                             "FAILURE: possible bad address line at physical "
--                            "address 0x%08lx.\n", 
-+                            "address 0x%08llx.\n", 
-                             physaddr);
-                 } else {
-                     fprintf(stderr,