diff --git a/lttng-ust.spec b/lttng-ust.spec
index b2f2518..3f1bfb8 100644
--- a/lttng-ust.spec
+++ b/lttng-ust.spec
@@ -1,6 +1,6 @@
 Name:           lttng-ust
 Version:        2.10.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 License:        LGPLv2 and GPLv2 and MIT
 Group:          Development/Libraries
 Summary:        LTTng Userspace Tracer library
@@ -30,11 +30,6 @@ LTTng user-space tracing
 %setup -q
 
 %build
-%ifarch s390 s390x
-# workaround rhbz#837572 (ICE in gcc)
-%global optflags %(echo %{optflags} | sed 's/-O2/-O1/')
-%endif
-
 # Reinitialize libtool with the fedora version to remove Rpath
 autoreconf -vif
 
@@ -76,6 +71,9 @@ rm -vf %{buildroot}%{_libdir}/*.la
 %{_docdir}/%{name}/examples/*
 
 %changelog
+* Fri Aug 18 2017 Dan Horák <dan[at]danny.cz> - 2.10.0-2
+- drop the s390(x) build workaround
+
 * Wed Aug 02 2017 Michael Jeanson <mjeanson@efficios.com> - 2.10.0-1
 - New upstream release