diff --git a/gcc7.patch b/gcc7.patch
new file mode 100644
index 0000000..cc972a7
--- /dev/null
+++ b/gcc7.patch
@@ -0,0 +1,25 @@
+diff -up webkitgtk-2.15.4/Source/cmake/OptionsCommon.cmake.gcc7 webkitgtk-2.15.4/Source/cmake/OptionsCommon.cmake
+--- webkitgtk-2.15.4/Source/cmake/OptionsCommon.cmake.gcc7	2017-02-01 08:19:21.694981976 +0100
++++ webkitgtk-2.15.4/Source/cmake/OptionsCommon.cmake	2017-02-01 08:21:27.255494123 +0100
+@@ -40,7 +40,8 @@ define_property(TARGET PROPERTY FOLDER I
+ if (COMPILER_IS_GCC_OR_CLANG)
+     set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-exceptions -fno-strict-aliasing")
+     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-exceptions -fno-strict-aliasing -fno-rtti")
+-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
++    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y -Wno-expansion-to-defined")
++    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-expansion-to-defined")
+ endif ()
+ 
+ if (COMPILER_IS_CLANG AND CMAKE_GENERATOR STREQUAL "Ninja")
+diff -up webkitgtk-2.15.4/Source/JavaScriptCore/runtime/JSArrayBufferView.h.gcc7 webkitgtk-2.15.4/Source/JavaScriptCore/runtime/JSArrayBufferView.h
+--- webkitgtk-2.15.4/Source/JavaScriptCore/runtime/JSArrayBufferView.h.gcc7	2017-02-01 08:23:15.678072858 +0100
++++ webkitgtk-2.15.4/Source/JavaScriptCore/runtime/JSArrayBufferView.h	2017-02-01 08:23:37.171989345 +0100
+@@ -167,7 +167,7 @@ public:
+     bool isNeutered() { return hasArrayBuffer() && !vector(); }
+     void neuter();
+     
+-    void* vector() { return m_vector.get(); }
++    void* vector() const { return m_vector.get(); }
+     
+     unsigned byteOffset();
+     unsigned length() const { return m_length; }
diff --git a/webkitgtk4.spec b/webkitgtk4.spec
index 6e15293..7c2b6b0 100644
--- a/webkitgtk4.spec
+++ b/webkitgtk4.spec
@@ -7,7 +7,7 @@
 
 Name:           webkitgtk4
 Version:        2.15.4
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        GTK+ Web content engine library
 
 License:        LGPLv2
@@ -19,6 +19,9 @@ Patch0:         webkitgtk-2.14.1-user-agent-branding.patch
 # https://fedoraproject.org/wiki/Packaging:CryptoPolicies
 # https://bugs.webkit.org/show_bug.cgi?id=158785
 Patch1:		fedora-crypto-policy.patch
+# https://bugs.webkit.org/show_bug.cgi?id=167642
+# https://bugs.webkit.org/show_bug.cgi?id=167643
+Patch2:     gcc7.patch
 
 BuildRequires:  at-spi2-core-devel
 BuildRequires:  bison
@@ -253,6 +256,9 @@ make %{?_smp_mflags} -C %{_target_platform}
 %{_datadir}/gtk-doc/html/webkitdomgtk-4.0/
 
 %changelog
+* Wed Feb 02 2017 Tomas Popela <tpopela@redhat.com> - 2.15.4-3
+- Push gcc7 fixes, only buildable with gcc-7.0.1-0.5.fc26 and higher
+
 * Wed Feb 01 2017 Sandro Mani <manisandro@gmail.com> - 2.15.4-2
 - Rebuild (libwebp)