diff --git a/fuzzers/frida_libpng/README.md b/fuzzers/frida_libpng/README.md
index 3169195764..fa2f915375 100644
--- a/fuzzers/frida_libpng/README.md
+++ b/fuzzers/frida_libpng/README.md
@@ -9,7 +9,8 @@ It has been tested on Linux.
 To build this example, run `cargo build --release` in this folder.
 This will call (the build.rs)[./build.rs], which in turn downloads a libpng archive from the web.
 Then, it will link (the fuzzer)[./src/fuzzer.rs] against (the C++ harness)[./harness.cc] and the instrumented `libpng`.
-Afterwards, the fuzzer will be ready to run, from `target/frida_libpng`.
+Afterwards, the fuzzer will be ready to run, from `target/frida_libpng`.  
+On unix platforms, you'll need [libc++](https://libcxx.llvm.org/) to build it.
 
 ### Build For Android
 When building for android using a cross-compiler, make sure you have a _standalone toolchain_, and then add the following:
@@ -30,7 +31,7 @@ After building the libpng-harness, too, you can run `find . -name libpng-harness
 `./target/release/frida_libpng ./libpng-harness.so LLVMFuzzerTestOneInput ./libpng-harness.so --cores=0`
 
 ## Windows
-You can also fuzz libpng-1.6.37 on windows with frida mode!
+You can also fuzz libpng-1.6.37 on windows with frida mode! (still experimental, we have an issue on frida-gum.)
 
 ### To build it with visual studio
 1. Install clang for windows (make sure you add LLVM to the system path!) 
@@ -62,43 +63,3 @@ clang++ -L.\zlib.dll .\harness.o .\libpng16.lib -lzlib -shared -o .\libpng-harne
 ./frida_libpng.exe ./libpng-harness.dll LLVMFuzzerTestOneInput ./libpng-harness.dll --cores=0
 ```
 
-### To build it with msys2
-1. Install and setup msys2 (https://www.msys2.org/) 
-2. (Optional) If you prefer to compile libpng with clang, you can install it and its dependecy with
-```
-pacman -S mingw-w64-x86_64-clang
-pacman -S mingw-w64-clang-x86_64-zlib
-```
-and
-```
-export LDFLAGS='-L/clang64/lib'
-export CPPFLAGS='-I/clang64/include'
-export CC=clang
-export CXX=clang++
-```
-3. Compile frida_libpng (possibly from your powershell)
-```
-cargo build --release
-cp ./target/release/frida_libpng.exe .
-```
-4. Compile libpng-1.6.37 with the following commands 
-```
-cd libpng-1.6.37
-./configure --enable-hardware-optimizations=yes --with-pic=yes
-make
-cd ..
-```
-5. Compile the harness with gcc or clang++
-```
-g++ -O3 -c -I./libpng-1.6.37 -fPIC harness.cc -o harness.o
-g++ -O3 harness.o ./libpng-1.6.37/.libs/libpng16.a -static -shared -lz -o libpng-harness.dll
-```
-or
-```
-clang++ -O3 -c -I./libpng-1.6.37 -fPIC harness.cc -o harness.o
-clang++ -O3 harness.o ./libpng-1.6.37/.libs/libpng16.a -static -shared -lz -o libpng-harness.dll
-```
-6. Run the fuzzer
-```
-./frida_libpng.exe ./libpng-harness.dll LLVMFuzzerTestOneInput ./libpng-harness.dll --cores=0
-```