diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index f6a186f..960e232 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -168,10 +168,14 @@
     add_library(${mbedx509_static_target} STATIC ${src_x509})
     set_target_properties(${mbedx509_static_target} PROPERTIES OUTPUT_NAME mbedx509)
     target_link_libraries(${mbedx509_static_target} ${libs} ${mbedcrypto_static_target})
+    target_include_directories(${mbedx509_static_target}
+        PUBLIC ${MBEDTLS_DIR}/include/)
 
     add_library(${mbedtls_static_target} STATIC ${src_tls})
     set_target_properties(${mbedtls_static_target} PROPERTIES OUTPUT_NAME mbedtls)
     target_link_libraries(${mbedtls_static_target} ${libs} ${mbedx509_static_target})
+    target_include_directories(${mbedtls_static_target}
+        PUBLIC ${MBEDTLS_DIR}/include/)
 
     install(TARGETS ${mbedtls_static_target} ${mbedx509_static_target} ${mbedcrypto_static_target}
             DESTINATION ${LIB_INSTALL_DIR}