diff --git a/llvm/utils/gn/secondary/llvm/unittests/Support/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
index 3204dd3602671..7dbe23e8196cc 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
@@ -12,7 +12,6 @@ unittest("SupportTests") {
     "AllocatorTest.cpp",
     "AnnotationsTest.cpp",
     "ArrayRecyclerTest.cpp",
-    "Base64Test.cpp",
     "BinaryStreamTest.cpp",
     "BlockFrequencyTest.cpp",
     "BranchProbabilityTest.cpp",