diff --git a/lib/CodeGen/ELFWriter.h b/lib/CodeGen/ELFWriter.h
index b257cfb..1317880 100644
--- a/lib/CodeGen/ELFWriter.h
+++ b/lib/CodeGen/ELFWriter.h
@@ -26,7 +26,7 @@
   class ELFCodeEmitter;
   class ELFRelocation;
   class ELFSection;
-  class ELFSym;
+  struct ELFSym;
   class GlobalVariable;
   class Mangler;
   class MachineCodeEmitter;
diff --git a/lib/CodeGen/MachOWriter.h b/lib/CodeGen/MachOWriter.h
index 3067ff1..e8e5793 100644
--- a/lib/CodeGen/MachOWriter.h
+++ b/lib/CodeGen/MachOWriter.h
@@ -27,7 +27,7 @@
   class MachODySymTab;
   class MachOHeader;
   class MachOSection;
-  class MachOSym;
+  struct MachOSym;
   class TargetData;
   class TargetMachine;
   class TargetAsmInfo;