diff --git a/example/ios/README.md b/example/ios/README.md
index 9414bef4..6104bcdc 100644
--- a/example/ios/README.md
+++ b/example/ios/README.md
@@ -7,12 +7,13 @@ If you need only a macOS build, take a look at our build instructions for [macOS
 For example of usage take a look at our [Swift example](https://github.com/tdlib/td/tree/master/example/swift).
 
 To compile `TDLib` you will need to:
-* Install the latest Xcode command line tools, for example, via `xcode-select --install`.
-* Install other build dependencies, for example, using [Homebrew](https://brew.sh):
+* Install the latest Xcode via `xcode-select --install` or downloading it from [Xcode website](https://developer.apple.com/xcode/).
+  It is not enough to install only command line developer tools to build `TDLib` for iOS.
+* Install other build dependencies using [Homebrew](https://brew.sh):
 ```
-brew install gperf cmake
+brew install gperf cmake coreutils
 ```
-* If you don't want to build `TDLib` for macOS, you can pregenerate required source code files using CMake prepare_cross_compiling target:
+* If you don't want to build `TDLib` for macOS, you can pregenerate required source code files using `CMake` prepare_cross_compiling target:
 ```
 cd <path to TDLib sources>
 mkdir native-build
diff --git a/example/ios/build.sh b/example/ios/build.sh
index 9970008a..4c2fde1e 100755
--- a/example/ios/build.sh
+++ b/example/ios/build.sh
@@ -1,5 +1,5 @@
 #/bin/sh
-td_path=$(realpath ../..)
+td_path=$(grealpath ../..)
 
 rm -rf build
 mkdir -p build
@@ -9,7 +9,7 @@ platforms="macOS iOS watchOS tvOS"
 for platform in $platforms;
 do
   echo "Platform = ${platform} Simulator = ${simulator}"
-  openssl_path=$(realpath ../third_party/openssl/${platform})
+  openssl_path=$(grealpath ../third_party/openssl/${platform})
   echo "OpenSSL path = ${openssl_path}"
   openssl_crypto_library="${openssl_path}/lib/libcrypto.a"
   openssl_ssl_library="${openssl_path}/lib/libssl.a"