diff --git a/baselibs.conf b/baselibs.conf
index 15b13d8..8d2572f 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1 +1 @@
-libvpx5
+libvpx6
diff --git a/libvpx.changes b/libvpx.changes
index 817aba7..971e2db 100644
--- a/libvpx.changes
+++ b/libvpx.changes
@@ -43,6 +43,9 @@ Tue Feb  5 07:37:48 UTC 2019 - Adrian Schröter <adrian@suse.de>
     VP8 multithread decoder issues.
     A variety of fuzzing issues.
 
+- so name is changing to 6
+- use optflags for building
+
 -------------------------------------------------------------------
 Tue Mar  6 16:30:12 UTC 2018 - adrian@suse.de
 
diff --git a/libvpx.spec b/libvpx.spec
index 49f9c02..0e0d175 100644
--- a/libvpx.spec
+++ b/libvpx.spec
@@ -16,7 +16,7 @@
 #
 
 
-%define         sover 5
+%define         sover 6
 Name:           libvpx
 Version:        1.8.0
 Release:        0
@@ -108,9 +108,7 @@ cd build
 # CPU doesn't have NEON, e.g. NVIDIA Tegra 2.
 # So, we still set -mfpu=neon when build libvpx rpm, but also enable
 # runtime-cpu-detect for runtime detect NEON.
-../configure \
-    --prefix=%{_prefix} \
-    --libdir=%{_libdir} \
+%configure \
     --enable-unit-tests \
     --enable-debug \
     --enable-shared \