diff --git a/src/test/validation_tests.cpp b/src/test/validation_tests.cpp
--- a/src/test/validation_tests.cpp
+++ b/src/test/validation_tests.cpp
@@ -28,14 +28,20 @@
     return block;
 }
 
-BOOST_FIXTURE_TEST_SUITE(validation_tests, BasicTestingSetup)
+BOOST_FIXTURE_TEST_SUITE(validation_tests, TestingSetup)
 
 /** Test that LoadExternalBlockFile works with the buffer size set
 below the size of a large block. Currently, LoadExternalBlockFile has the
 buffer size for CBufferedFile set to 2 * MAX_TX_SIZE. Test with a value
 of 10 * MAX_TX_SIZE. */
 BOOST_AUTO_TEST_CASE(validation_load_external_block_file) {
-    FILE *fp = tmpfile();
+    boost::filesystem::path tmpfile_name =
+        pathTemp / strprintf("vlebf_test_%lu_%i", (unsigned long)GetTime(),
+                             (int)(GetRand(100000)));
+
+    FILE *fp = fopen(tmpfile_name.string().c_str(), "wb+");
+
+    BOOST_CHECK(fp != nullptr);
 
     const Config &config = GetConfig();
     const CChainParams &chainparams = config.GetChainParams();