diff --git a/example/android/README.md b/example/android/README.md
index 7c41a295d..f484d2aa9 100644
--- a/example/android/README.md
+++ b/example/android/README.md
@@ -1,7 +1,7 @@
 # TDLib Android example
 
 This is an example of building `TDLib` for Android.
-You need a Bash shell on Linux, macOS, or Windows with some common tools, a C++ compiler, cmake, JDK, PHP, and gperf pre-installed.
+You need a Bash shell on Linux, macOS, or Windows with some common tools, a C++ compiler, JDK, PHP, perl, and gperf pre-installed.
 
 ## Building TDLib for Android
 
diff --git a/example/android/check-environment.sh b/example/android/check-environment.sh
index f3bdf960d..1308647b6 100755
--- a/example/android/check-environment.sh
+++ b/example/android/check-environment.sh
@@ -25,7 +25,7 @@ else
   exit 1
 fi
 
-for TOOL_NAME in gperf jar javadoc make perl php sed tar yes unzip ; do
+for TOOL_NAME in gperf jar java javadoc make perl php sed tar yes unzip ; do
   if ! which "$TOOL_NAME" >/dev/null 2>&1 ; then
     echo "Error: this script requires $TOOL_NAME tool installed."
     exit 1
@@ -43,3 +43,8 @@ if ! perl -MExtUtils::MakeMaker -MLocale::Maketext::Simple -MPod::Usage -e '' >/
   fi
   exit 1
 fi
+
+if ! java --help >/dev/null 2>&1 ; then
+  echo "Error: Java installation is broken. Install JDK from https://www.oracle.com/java/technologies/downloads/."
+  exit 1
+fi