diff --git a/webkit2gtk3-fix-i586-build.patch b/webkit2gtk3-fix-i586-build.patch
new file mode 100644
index 0000000..d7f4f16
--- /dev/null
+++ b/webkit2gtk3-fix-i586-build.patch
@@ -0,0 +1,89 @@
+Index: /trunk/CMakeLists.txt
+===================================================================
+--- /trunk/CMakeLists.txt	(revision 244137)
++++ /trunk/CMakeLists.txt	(revision 244138)
+@@ -115,14 +115,4 @@
+ endif ()
+ 
+-#---------------------------
+-# Make sure SSE2 is present.
+-#---------------------------
+-if (WTF_CPU_X86)
+-    include(FindSSE2)
+-    if (NOT SSE2_SUPPORT_FOUND)
+-        message(FATAL_ERROR "SSE2 support is required to compile WebKit")
+-    endif ()
+-endif ()
+-
+ # -----------------------------------------------------------------------------
+ # Determine the operating system
+Index: /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp
+===================================================================
+--- /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp	(revision 244137)
++++ /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.cpp	(revision 244138)
+@@ -168,4 +168,9 @@
+ static_assert(sizeof(Probe::State) == PROBE_SIZE, "Probe::State::size's matches ctiMasmProbeTrampoline");
+ static_assert((PROBE_EXECUTOR_OFFSET + PTR_SIZE) <= (PROBE_SIZE + OUT_SIZE), "Must have room after ProbeContext to stash the probe handler");
++
++#if CPU(X86)
++// SSE2 is a hard requirement on x86.
++static_assert(isSSE2Present(), "SSE2 support is required in JavaScriptCore");
++#endif
+ 
+ #undef PROBE_OFFSETOF
+@@ -788,4 +793,5 @@
+         {
+             CPUID cpuid = getCPUID(0x1);
++            s_sse2CheckState = (cpuid[3] & (1 << 26)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
+             s_sse4_1CheckState = (cpuid[2] & (1 << 19)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
+             s_sse4_2CheckState = (cpuid[2] & (1 << 20)) ? CPUIDCheckState::Set : CPUIDCheckState::Clear;
+@@ -804,4 +810,5 @@
+ }
+ 
++MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse2CheckState = CPUIDCheckState::NotChecked;
+ MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse4_1CheckState = CPUIDCheckState::NotChecked;
+ MacroAssemblerX86Common::CPUIDCheckState MacroAssemblerX86Common::s_sse4_2CheckState = CPUIDCheckState::NotChecked;
+Index: /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h
+===================================================================
+--- /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h	(revision 244137)
++++ /trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h	(revision 244138)
+@@ -4198,4 +4198,33 @@
+ #endif
+ 
++#if CPU(X86)
++#if OS(MAC_OS_X)
++
++    // All X86 Macs are guaranteed to support at least SSE2,
++    static bool isSSE2Present()
++    {
++        return true;
++    }
++
++#else // OS(MAC_OS_X)
++    static bool isSSE2Present()
++    {
++        if (s_sse2CheckState == CPUIDCheckState::NotChecked)
++            collectCPUFeatures();
++        return s_sse2CheckState == CPUIDCheckState::Set;
++    }
++
++#endif // OS(MAC_OS_X)
++#elif !defined(NDEBUG) // CPU(X86)
++
++    // On x86-64 we should never be checking for SSE2 in a non-debug build,
++    // but non debug add this method to keep the asserts above happy.
++    static bool isSSE2Present()
++    {
++        return true;
++    }
++
++#endif
++
+     using CPUID = std::array<unsigned, 4>;
+     static CPUID getCPUID(unsigned level);
+@@ -4203,4 +4232,5 @@
+     JS_EXPORT_PRIVATE static void collectCPUFeatures();
+ 
++    JS_EXPORT_PRIVATE static CPUIDCheckState s_sse2CheckState;
+     JS_EXPORT_PRIVATE static CPUIDCheckState s_sse4_1CheckState;
+     JS_EXPORT_PRIVATE static CPUIDCheckState s_sse4_2CheckState;
diff --git a/webkit2gtk3.changes b/webkit2gtk3.changes
index 9aee254..6f5241c 100644
--- a/webkit2gtk3.changes
+++ b/webkit2gtk3.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Apr 15 11:06:10 UTC 2019 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add webkit2gtk3-fix-i586-build.patch: Fix build on i586.
+
 -------------------------------------------------------------------
 Wed Apr 10 21:50:50 UTC 2019 - Bjørn Lie <bjorn.lie@gmail.com>
 
diff --git a/webkit2gtk3.spec b/webkit2gtk3.spec
index c7f0e2c..1667b2c 100644
--- a/webkit2gtk3.spec
+++ b/webkit2gtk3.spec
@@ -32,7 +32,7 @@
 %define _gold_linker 0
 %endif
 %else
-%ifarch ppc s390 
+%ifarch ppc s390
 %define _gold_linker 0
 %endif
 %endif
@@ -52,9 +52,10 @@ Source0:        https://webkitgtk.org/releases/%{_name}-%{version}.tar.xz
 Source1:        https://webkitgtk.org/releases/%{_name}-%{version}.tar.xz.asc
 Source98:       baselibs.conf
 Source99:       webkit2gtk3.keyring
+# PATCH-FIX-UPSTREAM webkit2gtk3-fix-i586-build.patch dimstar@opensuse.org -- Fix build on i586, taken from upstream https://trac.webkit.org/changeset/244138/webkit
+Patch0:         webkit2gtk3-fix-i586-build.patch
 # PATCH-FIX-UPSTREAM webkit2gtk3-boo1088932-a11y-state-set.patch boo#1088932 webkit#184366 mgorse@suse.com -- fix crash when atk_object_ref_state_set is called on an AtkObject that's being destroyed
 Patch1:         webkit2gtk3-boo1088932-a11y-state-set.patch
-
 BuildRequires:  Mesa-libEGL-devel
 BuildRequires:  Mesa-libGL-devel
 BuildRequires:  Mesa-libGLESv1_CM-devel
@@ -64,21 +65,12 @@ BuildRequires:  bison >= 2.3
 #BuildRequires:  bubblewrap
 BuildRequires:  cmake
 BuildRequires:  enchant-devel
-%if 0%{?suse_version} == 1315
-BuildRequires:  gcc7-c++
-%else
-BuildRequires:  gcc-c++ >= 4.9
-%endif
 BuildRequires:  gobject-introspection-devel
 BuildRequires:  gperf >= 3.0.1
 BuildRequires:  hyphen-devel
 BuildRequires:  libicu-devel
 BuildRequires:  libjpeg-devel
 BuildRequires:  ninja
-%if 0%{?suse_version} >= 1500
-BuildRequires:  openjpeg2
-BuildRequires:  openjpeg2-devel
-%endif
 BuildRequires:  perl >= 5.10.0
 BuildRequires:  pkgconfig
 BuildRequires:  ruby >= 1.8.7
@@ -112,15 +104,24 @@ BuildRequires:  pkgconfig(libpng)
 BuildRequires:  pkgconfig(libsecret-1)
 BuildRequires:  pkgconfig(libsoup-2.4) >= 2.61.90
 BuildRequires:  pkgconfig(libwebp)
-%if 0%{?suse_version} > 1500
-BuildRequires:  pkgconfig(libwoff2dec)
-%endif
 BuildRequires:  pkgconfig(libxml-2.0) >= 2.8.0
 BuildRequires:  pkgconfig(libxslt) >= 1.1.7
 BuildRequires:  pkgconfig(sqlite3)
 BuildRequires:  pkgconfig(upower-glib)
 BuildRequires:  pkgconfig(xt)
 BuildRequires:  pkgconfig(zlib)
+%if 0%{?suse_version} == 1315
+BuildRequires:  gcc7-c++
+%else
+BuildRequires:  gcc-c++ >= 4.9
+%endif
+%if 0%{?suse_version} >= 1500
+BuildRequires:  openjpeg2
+BuildRequires:  openjpeg2-devel
+%endif
+%if 0%{?suse_version} > 1500
+BuildRequires:  pkgconfig(libwoff2dec)
+%endif
 %if %{with python3}
 BuildRequires:  python3
 %else
@@ -290,6 +291,7 @@ A small test browswer from webkit, useful for testing features.
 
 %prep
 %setup -q -n webkitgtk-%{version}
+%patch0 -p2
 %patch1 -p1
 
 %build