diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3c9d49465ed49a1dfc985492f9bea4c6547053e..6d0abed193e12ad4afbaa4e4ab78ddea3293a9af 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -67,8 +67,16 @@ foreach(_build_type "Release" "MinSizeRel" "RelWithDebInfo")
 endforeach()
 
 
-find_package(GnuTLS 3.6.12)
-find_package(OpenSSL 1.1.1)
+if(WITHOUT_GNUTLS)
+  set(GNUTLS_FOUND FALSE)
+else()
+  find_package(GnuTLS 3.6.12)
+endif()
+if(WITHOUT_OPENSSL)
+  set(OPENSSL_FOUND FALSE)
+else()
+  find_package(OpenSSL 1.1.1)
+endif()
 find_package(Libev 4.11)
 find_package(Libnghttp3 0.0.0)
 find_package(CUnit 2.1)