diff --git a/llvm/lib/CodeGen/ELFWriter.cpp b/llvm/lib/CodeGen/ELFWriter.cpp
index 5c58dd4fd7a1..1c97f5e98a12 100644
--- a/llvm/lib/CodeGen/ELFWriter.cpp
+++ b/llvm/lib/CodeGen/ELFWriter.cpp
@@ -81,7 +81,7 @@ namespace llvm {
     }
 
     /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
-    void startFunctionStub(unsigned StubSize) {
+    void startFunctionStub(unsigned StubSize, unsigned Alignment = 1) {
       assert(0 && "JIT specific function called!");
       abort();
     }
diff --git a/llvm/lib/CodeGen/MachOWriter.cpp b/llvm/lib/CodeGen/MachOWriter.cpp
index be21f5ce4292..7c0855a5e13a 100644
--- a/llvm/lib/CodeGen/MachOWriter.cpp
+++ b/llvm/lib/CodeGen/MachOWriter.cpp
@@ -100,7 +100,7 @@ namespace llvm {
     }
 
     /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
-    void startFunctionStub(unsigned StubSize) {
+    void startFunctionStub(unsigned StubSize, unsigned Alignment = 1) {
       assert(0 && "JIT specific function called!");
       abort();
     }