diff --git a/build/single_file_libs/README.md b/build/single_file_libs/README.md
index 1705b769..64c973a6 100644
--- a/build/single_file_libs/README.md
+++ b/build/single_file_libs/README.md
@@ -12,7 +12,7 @@ This is the most common use case. The decompression library is small, adding, fo
 Create `zstddeclib.c` from the Zstd source using:
 ```
 cd zstd/build/single_file_libs
-./combine.sh -r ../../lib -o zstddeclib.c zstddeclib-in.c
+python3 combine.py -r ../../lib -x legacy/zstd_legacy.h -o zstddeclib.c zstddeclib-in.c
 ```
 Then add the resulting file to your project (see the [example files](examples)).
 
@@ -26,7 +26,7 @@ The same tool can amalgamate the entire Zstd library for ease of adding both com
 Create `zstd.c` from the Zstd source using:
 ```
 cd zstd/build/single_file_libs
-./combine.sh -r ../../lib -o zstd.c zstd-in.c
+python3 combine.py -r ../../lib -x legacy/zstd_legacy.h -k zstd.h -o zstd.c zstd-in.c
 ```
 It's possible to create a compressor-only library but since the decompressor is so small in comparison this doesn't bring much of a gain (but for the curious, simply remove the files in the _decompress_ section at the end of `zstd-in.c`).