diff --git a/lib/Bytecode/Writer/Writer.cpp b/lib/Bytecode/Writer/Writer.cpp
index 2550d107c3e..7d578f966e1 100644
--- a/lib/Bytecode/Writer/Writer.cpp
+++ b/lib/Bytecode/Writer/Writer.cpp
@@ -942,12 +942,12 @@ void BytecodeWriter::outputInstructions(const Function *F) {
 }
 
 void BytecodeWriter::outputFunction(const Function *F) {
-  // If this is an external function, there is nothing else to emit!
-  if (F->isExternal()) return;
-
   BytecodeBlock FunctionBlock(BytecodeFormat::FunctionBlockID, *this);
   output_vbr(getEncodedLinkage(F));
 
+  // If this is an external function, there is nothing else to emit!
+  if (F->isExternal()) return;
+
   // Get slot information about the function...
   Table.incorporateFunction(F);