--- a/filter/config
+++ b/filter/config
@@ -42,22 +42,13 @@ fi
 ngx_module_type=HTTP_FILTER
 ngx_module_name=ngx_http_brotli_filter_module
 
-brotli="$ngx_addon_dir/deps/brotli/c"
-if [ ! -f "$brotli/include/brotli/encode.h" ]; then
-  brotli="/usr/local"
-fi
-if [ ! -f "$brotli/include/brotli/encode.h" ]; then
-  brotli="/usr"
-fi
+brotli=$(pkg-config --variable=prefix libbrotlienc)
+
 if [ ! -f "$brotli/include/brotli/encode.h" ]; then
 cat << END
 
 $0: error: \
-Brotli library is missing from the $brotli directory.
-
-Please make sure that the git submodule has been checked out:
-
-    cd $ngx_addon_dir && git submodule update --init && cd $PWD
+Brotli library not found. Don't you have app-arch/brotli installed?
 
 END
     exit 1