diff --git a/projects/libwebp/build.sh b/projects/libwebp/build.sh
index 0d1eb633b..a6b102e95 100644
--- a/projects/libwebp/build.sh
+++ b/projects/libwebp/build.sh
@@ -20,6 +20,7 @@ WEBP_CFLAGS="$CFLAGS -DWEBP_MAX_IMAGE_SIZE=838860800" # 800MiB
 
 ./autogen.sh
 CFLAGS="$WEBP_CFLAGS" ./configure \
+  --enable-asserts \
   --enable-libwebpdemux \
   --enable-libwebpmux \
   --disable-shared \