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diff --git a/src/lib/rng/system_rng/system_rng.cpp b/src/lib/rng/system_rng/system_rng.cpp
index 135f4fa..3b44d5a 100644
--- a/src/lib/rng/system_rng/system_rng.cpp
+++ b/src/lib/rng/system_rng/system_rng.cpp
@@ -74,7 +74,7 @@ System_RNG_Impl::System_RNG_Impl()
#define O_NOCTTY 0
#endif
- m_fd = ::open(BOTAN_SYSTEM_RNG_DEVICE, O_RDWR | O_NOCTTY);
+ m_fd = ::open(BOTAN_SYSTEM_RNG_DEVICE, O_RDONLY | O_NOCTTY);
if(m_fd < 0)
throw Exception("System_RNG failed to open RNG device");
#endif
diff --git a/src/tests/test_ffi.cpp b/src/tests/test_ffi.cpp
index d481116..5b9f5fd 100644
--- a/src/tests/test_ffi.cpp
+++ b/src/tests/test_ffi.cpp
@@ -74,7 +74,7 @@ class FFI_Unit_Tests : public Test
if(TEST_FFI_OK(botan_rng_init, (&rng, "system")))
{
TEST_FFI_OK(botan_rng_get, (rng, outbuf.data(), outbuf.size()));
- TEST_FFI_OK(botan_rng_reseed, (rng, 256));
+ //TEST_FFI_OK(botan_rng_reseed, (rng, 256));
TEST_FFI_OK(botan_rng_destroy, (rng));
}
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