diff --git a/lld/COFF/TypeMerger.h b/lld/COFF/TypeMerger.h
index b4e3d6e7d9fdb..effb6d603a592 100644
--- a/lld/COFF/TypeMerger.h
+++ b/lld/COFF/TypeMerger.h
@@ -9,6 +9,7 @@
 #ifndef LLD_COFF_TYPEMERGER_H
 #define LLD_COFF_TYPEMERGER_H
 
+#include "COFFLinkerContext.h"
 #include "Config.h"
 #include "DebugTypes.h"
 #include "lld/Common/Timer.h"
diff --git a/lld/ELF/DWARF.h b/lld/ELF/DWARF.h
index 64c25c706c343..19b17647378bd 100644
--- a/lld/ELF/DWARF.h
+++ b/lld/ELF/DWARF.h
@@ -10,6 +10,7 @@
 #define LLD_ELF_DWARF_H
 
 #include "InputFiles.h"
+#include "InputSection.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/STLFunctionalExtras.h"
 #include "llvm/DebugInfo/DWARF/DWARFContext.h"