diff --git a/lib/Bytecode/Reader/Reader.cpp b/lib/Bytecode/Reader/Reader.cpp
index b3869fb..787d000 100644
--- a/lib/Bytecode/Reader/Reader.cpp
+++ b/lib/Bytecode/Reader/Reader.cpp
@@ -1403,7 +1403,7 @@
     unsigned Val = read_vbr_uint();
     if (Val != 0 && Val != 1)
       error("Invalid boolean value read.");
-    Result = ConstantInt::get(Val == 1);
+    Result = ConstantInt::get(Type::Int1Ty, Val == 1);
     if (Handler) Handler->handleConstantValue(Result);
     break;
   }
diff --git a/lib/Bytecode/Writer/Writer.cpp b/lib/Bytecode/Writer/Writer.cpp
index 7acd209..9a04428 100644
--- a/lib/Bytecode/Writer/Writer.cpp
+++ b/lib/Bytecode/Writer/Writer.cpp
@@ -322,7 +322,7 @@
 
   switch (CPV->getType()->getTypeID()) {
   case Type::Int1TyID:    // Boolean Types
-    if (cast<ConstantInt>(CPV)->getBoolValue())
+    if (cast<ConstantInt>(CPV)->getZExtValue())
       output_vbr(1U);
     else
       output_vbr(0U);