diff --git a/pngquant.spec b/pngquant.spec
index 7cc2ae2..e3286e4 100644
--- a/pngquant.spec
+++ b/pngquant.spec
@@ -3,7 +3,7 @@
 
 Name:		pngquant
 Version:	1.8.3
-Release:	4%{?dist}
+Release:	5%{?dist}
 Summary:	PNG quantization tool for reducing image file size
 Group:		Applications/Multimedia
 License:	BSD with advertising
@@ -13,6 +13,7 @@ Source0:	http://%{name}.org/%{name}-%{version}-src.tar.bz2
 # this will be in the next version
 Patch0:		pngquant_respect_system_flags.patch
 
+%{?el5:BuildRoot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)}
 BuildRequires:	libpng-devel
 
 
@@ -47,7 +48,11 @@ make %{?_smp_mflags}
 # proper compiler-flags
 %configure
 
-%make_install PREFIX=%{_prefix}
+%if 0%{?el5}
+  make install DESTDIR="%{buildroot}" PREFIX=%{_prefix}
+%else
+  %make_install PREFIX=%{_prefix}
+%endif
 
 install	-Dpm0644 %{name}.1 \
 	%{buildroot}/%{_mandir}/man1/%{name}.1
@@ -60,6 +65,9 @@ install	-Dpm0644 %{name}.1 \
 
 
 %changelog
+* Fri May 24 2013 Björn Esser <bjoern.esser@gmail.com> - 1.8.3-5
+- add el5-build related conditonals
+
 * Wed May 22 2013 Björn Esser <bjoern.esser@gmail.com> - 1.8.3-4
 - add Group-Tag to make el5-build happy