diff --git a/speech-tools.spec b/speech-tools.spec
index 7bd0a16..2c90501 100644
--- a/speech-tools.spec
+++ b/speech-tools.spec
@@ -1,6 +1,6 @@
 Name:           speech-tools
 Version:        2.5
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        Edinburgh speech tools library
 
 License:        MIT
@@ -11,6 +11,7 @@ Source0: http://festvox.org/packed/festival/%{version}/speech_tools-%{version}.0
 Source1: LICENSE
 Patch0: enable_shared.patch
 
+BuildRequires: make
 BuildRequires: gcc-c++
 BuildRequires: ncurses-devel
 BuildRequires: alsa-lib-devel
@@ -33,7 +34,7 @@ and some basic signal processing software.
 %build
 %configure
 # The following make invocation is necessary because configure does not honor the default compiler flags and ignoring those breaks the debuginfo package generation. Also, it disables problematic parallel make.
-make CFLAGS="%{optflags} -fPIC -flto -fno-lto" CXXFLAGS="%{optflags} -fPIC -flto -fno-lto" LDFLAGS="$LDFLAGS -flto -fno-lto"
+%__make CFLAGS="%{optflags} -fPIC -flto -fno-lto" CXXFLAGS="%{optflags} -fPIC -flto -fno-lto" LDFLAGS="$LDFLAGS -flto -fno-lto"
 
 %install
 mkdir -p %{buildroot}%{_bindir}
@@ -103,6 +104,9 @@ but they might be depended upon by some third-party developers as well.
 %{_libdir}/*.a
 
 %changelog
+* Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.5-15
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2.5-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild