diff --git a/packages/addons/addon-depends/ffmpegx-depends/x265/package.mk b/packages/addons/addon-depends/ffmpegx-depends/x265/package.mk
index bae256f78d..4ac57301c3 100644
--- a/packages/addons/addon-depends/ffmpegx-depends/x265/package.mk
+++ b/packages/addons/addon-depends/ffmpegx-depends/x265/package.mk
@@ -14,5 +14,5 @@ PKG_TOOLCHAIN="make"
 
 pre_configure_target() {
   LDFLAGS+=" -ldl"
-  cmake -G "Unix Makefiles" ./source
+  cmake -DCMAKE_INSTALL_PREFIX=/usr -G "Unix Makefiles" ./source
 }