diff --git a/package/kasc/libsdl_gfx/libsdl_gfx.conf b/package/kasc/libsdl_gfx/libsdl_gfx.conf
new file mode 100644
index 000000000..6f88884e9
--- /dev/null
+++ b/package/kasc/libsdl_gfx/libsdl_gfx.conf
@@ -0,0 +1,7 @@
+
+if [ $arch = x86 ] ; then
+	var_append confopt " " "--enable-mmx"
+else
+	var_append confopt " " "--disable-mmx"
+fi
+
diff --git a/package/tibit/nvrec/nvrec.conf b/package/tibit/nvrec/nvrec.conf
index 39fee807d..0557b48c1 100644
--- a/package/tibit/nvrec/nvrec.conf
+++ b/package/tibit/nvrec/nvrec.conf
@@ -20,5 +20,12 @@
 # 
 # --- ROCK-COPYRIGHT-NOTE-END ---
 
+if [ $arch = x86 ] ; then
+	var_append confopt " " "--enable-X86_MMX --enable-X86_MMXEXT \
+--enable-X86_SSE --enable-X86_SSE2 --enable-X86_3DNOW --enable-X86_3DNOWEXT"
+else
+	var_append confopt " " "--disable-X86_MMX --disable-X86_MMXEXT \
+--disable-X86_SSE --disable-X86_SSE2 --disable-X86_3DNOW --disable-X86_3DNOWEXT"
+fi
 
 preconf="./bootstrap"
diff --git a/package/tibit/nvrec/nvrec.desc b/package/tibit/nvrec/nvrec.desc
index 799f08108..cae4433b4 100644
--- a/package/tibit/nvrec/nvrec.desc
+++ b/package/tibit/nvrec/nvrec.desc
@@ -36,7 +36,6 @@
 [M] Tilmann Bitterberg <transcode@tibit.org>
 
 [C] extra/multimedia
-[R] + x86
 
 [L] GPL
 [S] Beta