diff --git a/tools/llvm-mc-assemble-fuzzer/llvm-mc-assemble-fuzzer.cpp b/tools/llvm-mc-assemble-fuzzer/llvm-mc-assemble-fuzzer.cpp
index 29699c634bf..513ddc308e6 100644
--- a/tools/llvm-mc-assemble-fuzzer/llvm-mc-assemble-fuzzer.cpp
+++ b/tools/llvm-mc-assemble-fuzzer/llvm-mc-assemble-fuzzer.cpp
@@ -27,6 +27,7 @@
 #include "llvm/MC/SubtargetFeature.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Host.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/TargetRegistry.h"
diff --git a/tools/llvm-mc-disassemble-fuzzer/llvm-mc-disassemble-fuzzer.cpp b/tools/llvm-mc-disassemble-fuzzer/llvm-mc-disassemble-fuzzer.cpp
index f998c465104..77708cb860d 100644
--- a/tools/llvm-mc-disassemble-fuzzer/llvm-mc-disassemble-fuzzer.cpp
+++ b/tools/llvm-mc-disassemble-fuzzer/llvm-mc-disassemble-fuzzer.cpp
@@ -12,6 +12,7 @@
 #include "llvm-c/Target.h"
 #include "llvm/MC/SubtargetFeature.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Host.h"
 #include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;