diff --git a/pigz.spec b/pigz.spec
index 9bf9d10..a22ae6f 100644
--- a/pigz.spec
+++ b/pigz.spec
@@ -4,8 +4,8 @@ Release:        7%{?dist}
 Summary:        Parallel implementation of gzip
 
 License:        zlib
-URL:            http://www.zlib.net/pigz/
-Source0:        http://www.zlib.net/%{name}/%{name}-%{version}.tar.gz
+URL:            https://www.zlib.net/pigz/
+Source0:        https://www.zlib.net/%{name}/%{name}-%{version}.tar.gz
 
 BuildRequires: make
 BuildRequires:  gcc
@@ -15,13 +15,14 @@ BuildRequires:  ncompress
 %description
 pigz, which stands for parallel implementation of gzip,
 is a fully functional replacement for gzip that exploits
-multiple processors and multiple cores to the hilt when compressing data.
+multiple processors and multiple cores to the hilt when
+compressing data.
 
 %prep
 %setup -q
 
 %build
-make %{?_smp_mflags} CFLAGS="$RPM_OPT_FLAGS"
+%make_build CFLAGS="$RPM_OPT_FLAGS"
 
 
 %install