diff --git a/lib/Bytecode/Reader/Reader.cpp b/lib/Bytecode/Reader/Reader.cpp
index 14f6c9f..1b11f22 100644
--- a/lib/Bytecode/Reader/Reader.cpp
+++ b/lib/Bytecode/Reader/Reader.cpp
@@ -1641,6 +1641,11 @@
 void BytecodeReader::ParseGlobalTypes() {
   // Read the number of types
   unsigned NumEntries = read_vbr_uint();
+
+  // Ignore the type plane identifier for types if the bc file is pre 1.3
+  if (hasTypeDerivedFromValue)
+    read_vbr_uint();
+
   ParseTypeConstants(ModuleTypes, NumEntries);
 }