diff --git a/indra/llcorehttp/tests/llcorehttp_test.cpp b/indra/llcorehttp/tests/llcorehttp_test.cpp
index cf4dff877ad75c234d5f3b40e75f49cdef5c1a89..362b2309eef10c5602eba9d5136852468b20dae1 100755
--- a/indra/llcorehttp/tests/llcorehttp_test.cpp
+++ b/indra/llcorehttp/tests/llcorehttp_test.cpp
@@ -41,9 +41,14 @@
 #include "test_httpstatus.hpp"
 #include "test_refcounted.hpp"
 #include "test_httpoperation.hpp"
+// As of 2019-06-28, test_httprequest.hpp consistently crashes on Mac Release
+// builds for reasons not yet diagnosed.
+#if ! (LL_DARWIN && LL_RELEASE)
 #include "test_httprequest.hpp"
+#endif
 #include "test_httpheaders.hpp"
 #include "test_httprequestqueue.hpp"
+#include "_httpservice.h"
 
 #include "llproxy.h"
 #include "llcleanup.h"