diff --git a/gmp.changes b/gmp.changes
index 396394f..6638eec 100644
--- a/gmp.changes
+++ b/gmp.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Feb  9 13:57:35 UTC 2017 - dimstar@opensuse.org
+
+- Explicitly BuildRequire m4
+
 -------------------------------------------------------------------
 Wed Jan  4 08:20:17 UTC 2017 - rguenther@suse.com
 
diff --git a/gmp.spec b/gmp.spec
index b3d24da..8283dea 100644
--- a/gmp.spec
+++ b/gmp.spec
@@ -30,6 +30,7 @@ Source3:        baselibs.conf
 Patch0:         gmp-noexec.diff
 Patch1:         gmp-6.1.2-conftest.patch
 BuildRequires:  gcc-c++
+BuildRequires:  m4
 BuildRequires:  xz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build