diff --git a/extra/libwebp/build b/extra/libwebp/build
index 9b42927e..049da6e4 100755
--- a/extra/libwebp/build
+++ b/extra/libwebp/build
@@ -8,4 +8,4 @@
     --enable-libwebpdecoder
 
 make
-make DESTDIR="$1" install
+make install