diff --git a/src/Package/Library/ngtcp2.php b/src/Package/Library/ngtcp2.php
index c88b643b..0a5ca8f5 100644
--- a/src/Package/Library/ngtcp2.php
+++ b/src/Package/Library/ngtcp2.php
@@ -24,7 +24,7 @@ class ngtcp2
                 '-DBUILD_SHARED_LIBS=OFF',
                 '-DENABLE_STATIC_CRT=ON',
                 '-DENABLE_LIB_ONLY=ON',
-                '-DENABLE_OPENSSL=ON',
+                '-DENABLE_OPENSSL=OFF',
             )
             ->build();
     }