diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index 0fa234dc..ec6b9219 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -1,3 +1,4 @@
+project(baresip)
 
 cmake_minimum_required(VERSION 3.4.1)
 
@@ -71,6 +72,8 @@ target_include_directories(baresip PRIVATE
         ${distribution_DIR}/rem/include
         ${distribution_DIR}/baresip/include)
 
+add_definitions(-DHAVE_PTHREAD)
+
 target_link_libraries(baresip
         android
         OpenSLES