diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f4c163..c12d2fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,7 @@ if (MSVC)
         Poco::Zip
     )
 else()
+    include_directories(${TERMUX_LIB_DIR}/include)
     add_executable(mail-cpp main.cpp)
     target_link_directories(mail-cpp PRIVATE ${TERMUX_LIB_DIR}/lib)
     target_link_libraries(mail-cpp PRIVATE