diff --git a/lzma-sdk-shlib.patch b/lzma-sdk-shlib.patch
index a501c08..08ff52d 100644
--- a/lzma-sdk-shlib.patch
+++ b/lzma-sdk-shlib.patch
@@ -27,23 +27,6 @@ Index: 1/C/Bcj2Enc.c
  #include <string.h>
  
  #include "Bcj2.h"
-Index: 1/C/Lzma2Enc.c
-===================================================================
---- 1.orig/C/Lzma2Enc.c
-+++ 1/C/Lzma2Enc.c
-@@ -720,10 +720,10 @@ SRes Lzma2Enc_Encode2(CLzma2EncHandle pp
-   CLzma2Enc *p = (CLzma2Enc *)pp;
- 
-   if (inStream && inData)
--    return E_INVALIDARG;
-+    return SZ_ERROR_PARAM;
- 
-   if (outStream && outBuf)
--    return E_INVALIDARG;
-+    return SZ_ERROR_PARAM;
- 
-   {
-     unsigned i;
 Index: 1/Makefile.am
 ===================================================================
 --- /dev/null
diff --git a/lzma-sdk.changes b/lzma-sdk.changes
index abfe05e..c76e72a 100644
--- a/lzma-sdk.changes
+++ b/lzma-sdk.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Sat Mar 10 18:55:18 UTC 2018 - aloisio@gmx.com
+
+- Update to version 18.03
+  * Asm\x86\LzmaDecOpt.asm: new optimized LZMA decoder written in
+    asm for x64 with about 30% higher speed than main version of
+    LZMA decoder written in C.
+  * The speed for single-thread LZMA/LZMA2 decoder written in C
+    was increased by 3%.
+
+- Refreshed lzma-sdk-shlib.patch
+
 -------------------------------------------------------------------
 Mon Jan 29 20:45:47 UTC 2018 - aloisio@gmx.com
 
diff --git a/lzma-sdk.spec b/lzma-sdk.spec
index 1f17297..83680af 100644
--- a/lzma-sdk.spec
+++ b/lzma-sdk.spec
@@ -16,11 +16,11 @@
 #
 
 
-%define _sver   1801
+%define _sver   1803
 %define _maver  18
-%define _miver  01
+%define _miver  03
 Name:           lzma-sdk
-Version:        18.01
+Version:        18.03
 Release:        0
 Summary:        An implementation of LZMA compression
 # Actually the site says "Public Domain". See license file.
diff --git a/lzma1801.7z b/lzma1801.7z
deleted file mode 100644
index eeee810..0000000
--- a/lzma1801.7z
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:630f2534f73633011d60c6724cd8c1b3e549edd844dc09f54aae358d64089802
-size 1007853
diff --git a/lzma1803.7z b/lzma1803.7z
new file mode 100644
index 0000000..fcc926c
--- /dev/null
+++ b/lzma1803.7z
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:99394653023c4f4d62ef9d98557406d31aa60610e37537e97bba109018a02f02
+size 1051411