diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp
index 0121f15..b2a20a7 100644
--- a/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/lib/CodeGen/RegAllocLinearScan.cpp
@@ -233,7 +233,7 @@
       bool Error = false;
       for (unsigned i = 0, e = tri_->getNumRegs(); i != e; ++i) {
         if (regUse_[i] != 0) {
-          cerr << tri_->getName(i) << " is still in use!\n";
+          errs() << tri_->getName(i) << " is still in use!\n";
           Error = true;
         }
       }