diff --git a/llvm/utils/gn/secondary/lldb/tools/lldb-server/BUILD.gn b/llvm/utils/gn/secondary/lldb/tools/lldb-server/BUILD.gn
index 1c5be96ea618..6ed291f4dd71 100644
--- a/llvm/utils/gn/secondary/lldb/tools/lldb-server/BUILD.gn
+++ b/llvm/utils/gn/secondary/lldb/tools/lldb-server/BUILD.gn
@@ -18,7 +18,7 @@ executable("lldb-server") {
     "//lldb/source/Host",
     "//lldb/source/Initialization",
 
-    #"//lldb/source/Plugins/Instruction/ARM", # XXX
+    "//lldb/source/Plugins/Instruction/ARM",
     #"//lldb/source/Plugins/Instruction/MIPS", # XXX
     #"//lldb/source/Plugins/Instruction/MIPS64", # XXX
     "//llvm/lib/Option",