diff --git a/OpenImageIO.spec b/OpenImageIO.spec
index 0fe3f3b..0a0c94e 100644
--- a/OpenImageIO.spec
+++ b/OpenImageIO.spec
@@ -20,7 +20,7 @@ Patch2:         OpenImageIO-as_needed.patch
 
 BuildRequires:  cmake gcc-c++
 BuildRequires:  txt2man
-BuildRequires:  qt4-devel
+BuildRequires:  qt5-devel
 %if 0%{?rhel} && 0%{?rhel} < 7
 BuildRequires:  boost148-devel
 %else
@@ -148,12 +148,12 @@ rm -rf build/linux && mkdir -p build/linux && pushd build/linux
        -DVERBOSE=TRUE \
        ../../
 
-make %{?_smp_mflags}
+%make_build
 
 
 %install
 pushd build/linux
-make DESTDIR=%{buildroot} install
+%make_install
 
 # Move man pages to the right directory
 mkdir -p %{buildroot}%{_mandir}/man1