diff --git a/CMakeLists.txt b/CMakeLists.txt
index d60aa7c83..7407dfdd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -99,11 +99,14 @@ if(NOT EMSCRIPTEN AND NOT ANDROID AND NOT IOS)
   set(WITH_APPS OFF) # don't build executable
   add_subdirectory(src/openssl)
 
+  set(CURL_USE_LIBSSH2 OFF)
+  set(CURL_USE_LIBPSL OFF)
   set(CURL_ENABLE_EXPORT_TARGET OFF)
   set(BUILD_TESTING OFF)
   set(BUILD_CURL_EXE OFF)
   set(BUILD_SHARED_LIBS OFF)
   set(BUILD_STATIC_LIBS ON)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCURL_STATICLIB") # see "Important static libcurl usage note" in INSTALL.md
   add_subdirectory(src/curl)
 endif()