diff --git a/disable_sse.patch b/disable_sse.patch
index 6e1b149..54a78a3 100644
--- a/disable_sse.patch
+++ b/disable_sse.patch
@@ -1,12 +1,12 @@
---- src/CMakeLists.txt.orig	2018-04-18 16:11:00.227988702 +0200
-+++ src/CMakeLists.txt	2018-04-18 16:11:14.228041424 +0200
-@@ -97,9 +97,6 @@ if(APPLE)
+--- src/CMakeLists.txt.orig	2020-04-29 12:44:22.087112317 +0000
++++ src/CMakeLists.txt	2020-04-29 12:44:38.886604020 +0000
+@@ -159,9 +159,6 @@ if(APPLE)
  	set_source_files_properties(${OSX_ICON} PROPERTIES MACOSX_PACKAGE_LOCATION Resources)
  endif(APPLE)
  
 -# enable SSE instructions for dumb library
 -set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_USE_SSE -msse")
 -
- add_executable(slade WIN32 MACOSX_BUNDLE
- 	External/lzma/C/LzmaDec.c
- 	External/mus2mid/mus2mid.cpp
+ # External libraries are compiled separately to enable unity builds
+ add_subdirectory(External)
+ 
diff --git a/slade.changes b/slade.changes
index 5f3ad37..a8755d5 100644
--- a/slade.changes
+++ b/slade.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Apr 29 12:45:36 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Refresh disable_sse.patch
+
 -------------------------------------------------------------------
 Sat Apr 18 17:06:32 UTC 2020 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/slade.spec b/slade.spec
index 1d67dc6..fef8e47 100644
--- a/slade.spec
+++ b/slade.spec
@@ -33,6 +33,7 @@ BuildRequires:  ImageMagick
 BuildRequires:  cmake >= 3.1
 BuildRequires:  freeimage-devel
 BuildRequires:  gcc-c++ >= 6
+BuildRequires:  pkgconfig
 BuildRequires:  update-desktop-files
 BuildRequires:  wxWidgets-3_0-devel
 BuildRequires:  zip
@@ -54,7 +55,7 @@ game-specific formats, and even convert between some of them, or
 from/to other generic formats such as PNG.
 
 %prep
-%setup -qn SLADE-%version
+%setup -q -n SLADE-%version
 %patch -P 1 -P 2 -p1
 %ifnarch %ix86 x86_64
 %patch10 -p0
@@ -69,7 +70,7 @@ make %{?_smp_mflags}
 %if 0%{?suse_version} > 1320
 strip-nondeterminism build/slade.pk3
 %endif
-b="%buildroot"
+b=%{buildroot}
 install -Dm755 build/slade "$b/%_bindir/slade"
 install -Dm644 build/slade.pk3 "$b/%_datadir/slade3/slade.pk3"