diff --git a/libsigc++2.changes b/libsigc++2.changes
index dde83f2..a32f17b 100644
--- a/libsigc++2.changes
+++ b/libsigc++2.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Jun 16 19:19:09 UTC 2016 - zaitor@opensuse.org
+
+- No longer apply libsigc++-std-c11.patch for Tumbleweed, not
+  needed anymore since GCC 6.
+
 -------------------------------------------------------------------
 Wed Mar 16 12:59:06 UTC 2016 - dimstar@opensuse.org
 
diff --git a/libsigc++2.spec b/libsigc++2.spec
index 80bc3d8..25da6f1 100644
--- a/libsigc++2.spec
+++ b/libsigc++2.spec
@@ -70,11 +70,11 @@ of use unmatched by other C++ callback libraries.
 
 %prep
 %setup -q -n %{_name}-%{version}
+if [ $(gcc -dumpversion | awk -F. '{print $1}') -lt 6 ]; then
 %patch0 -p1
+fi
 
 %build
-# FIXME: Cannot autoreconf, bad templates:
-#ACLOCAL="aclocal -I scripts" autoreconf -f -i
 %configure --disable-static --with-pic
 make %{?_smp_mflags}