diff --git a/portage/env/gcc-basic.conf b/portage/env/gcc-basic.conf
index 083e2d3..be50da0 100644
--- a/portage/env/gcc-basic.conf
+++ b/portage/env/gcc-basic.conf
@@ -4,17 +4,17 @@
 
 
 # Toolchain.
+AR="ar"
 CC="gcc"
 CXX="g++"
-AR="ar"
 NM="nm"
 RANLIB="ranlib"
 
 
 # Flags.
 ## Compiler flags.
-CFLAGS="-march=znver1 -O2 -pipe -U__gnu_linux__"
-CXXFLAGS="-march=znver1 -O2 -pipe"
+CFLAGS="-march=znver3 -O2 -pipe -U__gnu_linux__"
+CXXFLAGS="-march=znver3 -O2 -pipe"
 
 ## Linker flags.
 LDFLAGS="-Wl,-O2"