diff --git a/example/java/CMakeLists.txt b/example/java/CMakeLists.txt
index 6a03776b2..602a5fa99 100644
--- a/example/java/CMakeLists.txt
+++ b/example/java/CMakeLists.txt
@@ -59,13 +59,13 @@ set(JAVA_SOURCE_PATH "${TD_API_JAVA_PATH}/${TD_API_JAVA_PACKAGE}")
 get_filename_component(JAVA_OUTPUT_DIRECTORY ${CMAKE_INSTALL_PREFIX}/bin REALPATH BASE_DIR "${CMAKE_CURRENT_BINARY_DIR}")
 file(MAKE_DIRECTORY ${JAVA_OUTPUT_DIRECTORY})
 add_custom_target(build_java
-  COMMAND ${Java_JAVAC_EXECUTABLE} -d ${JAVA_OUTPUT_DIRECTORY} ${JAVA_SOURCE_PATH}/example/Example.java ${JAVA_SOURCE_PATH}/Client.java ${JAVA_SOURCE_PATH}/Log.java ${JAVA_SOURCE_PATH}/TdApi.java
+  COMMAND ${Java_JAVAC_EXECUTABLE} -encoding UTF-8 -d ${JAVA_OUTPUT_DIRECTORY} ${JAVA_SOURCE_PATH}/example/Example.java ${JAVA_SOURCE_PATH}/Client.java ${JAVA_SOURCE_PATH}/Log.java ${JAVA_SOURCE_PATH}/TdApi.java
   COMMENT "Building Java code"
   DEPENDS td_generate_java_api
 )
 
 add_custom_target(generate_javadoc
-  COMMAND ${Java_JAVADOC_EXECUTABLE} -d ${JAVA_OUTPUT_DIRECTORY}/../docs org.drinkless.tdlib
+  COMMAND ${Java_JAVADOC_EXECUTABLE} -encoding UTF-8 -d ${JAVA_OUTPUT_DIRECTORY}/../docs org.drinkless.tdlib
   WORKING_DIRECTORY ${TD_API_JAVA_PATH}
   COMMENT "Generating Javadoc documentation"
   DEPENDS td_generate_java_api