diff --git a/pngquant.spec b/pngquant.spec
index 924c81f..44737aa 100644
--- a/pngquant.spec
+++ b/pngquant.spec
@@ -1,11 +1,9 @@
-# add some speed-relevant compiler-flags
-%global optflags %(echo %{optflags} -fno-math-errno -funroll-loops -fomit-frame-pointer -fPIC )
-
 %global libname libimagequant
 
+
 Name:       pngquant
 Version:    2.10.1
-Release:    1%{?dist}
+Release:    2%{?dist}
 Summary:    PNG quantization tool for reducing image file size
 
 License:    GPLv3+
@@ -17,6 +15,7 @@ BuildRequires:  libpng-devel >= 1.2.46-1
 BuildRequires:  zlib-devel >= 1.2.3-1
 BuildRequires:  lcms2-devel
 BuildRequires:  %{libname}-devel >= %{version}
+
 Requires:       libpng%{?_isa} >= 1.2.46-1
 Requires:       zlib%{?_isa} >= 1.2.3-1
 Requires:       %{libname}%{?_isa} = %{version}
@@ -31,10 +30,15 @@ their 24/32-bit version. %{name} uses the median cut algorithm.
 
 
 %prep
-%setup -q
+%autosetup -p 1
 
 
 %build
+# add some speed-relevant compiler-flags
+export CFLAGS="%{optflags} -fno-math-errno -funroll-loops -fomit-frame-pointer -fPIC"
+export CXXFLAGS="$CFLAGS"
+export FFLAGS="%{%__global_fflags} -fno-math-errno -funroll-loops -fomit-frame-pointer -fPIC"
+export FCFLAGS="$FFLAGS"
 %configure --with-openmp --with-libimagequant
 %make_build
 
@@ -44,7 +48,7 @@ their 24/32-bit version. %{name} uses the median cut algorithm.
 
 
 %check
-make test
+%make_build test
 
 
 %files
@@ -55,6 +59,9 @@ make test
 
 
 %changelog
+* Mon Jul 10 2017 Björn Esser <besser82@fedoraproject.org> - 2.10.1-2
+- Apply additional compiler flags properly
+
 * Mon Jul 10 2017 Sandro Mani <manisandro@gmail.com> - 2.10.1-1
 - Update to 2.10.1