diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5b26ec..fa3985e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,9 @@ FetchContent_Declare(
 )
 
 # seallib config
+if (TINYMITM_TEST)
+    set(SEALLIB_LOG ON CACHE BOOL "" FORCE)
+endif()
 set(SEALLIB_EVENTS ON CACHE BOOL "" FORCE)
 FetchContent_GetProperties(seallib)
 FetchContent_MakeAvailable(seallib)