diff --git a/media-libs/x265/x265-3.4.recipe b/media-libs/x265/x265-3.4.recipe
index 4c8bb40cc..8fe8ea32b 100644
--- a/media-libs/x265/x265-3.4.recipe
+++ b/media-libs/x265/x265-3.4.recipe
@@ -41,7 +41,7 @@ BUILD_PREREQUIRES="
 	cmd:cmake
 	cmd:gcc$secondaryArchSuffix
 	cmd:make
-	cmd:yasm
+	cmd:nasm
 	"
 
 BUILD()
@@ -51,6 +51,7 @@ BUILD()
 	cd source
 
 	cmake	-DCMAKE_INSTALL_PREFIX:PATH=$prefix	\
+		-DCMAKE_BUILD_TYPE=Release				\
 		-DLIB_INSTALL_DIR:PATH=$relativeLibDir	\
 		-DBIN_INSTALL_DIR:PATH=bin	\
 		-DINCLUDE_INSTALL_DIR:PATH=$relativeIncludeDir