diff --git a/llvm/lib/Target/X86/X86InstructionSelector.cpp b/llvm/lib/Target/X86/X86InstructionSelector.cpp
index 2176c59b1382..931e8ce7c127 100644
--- a/llvm/lib/Target/X86/X86InstructionSelector.cpp
+++ b/llvm/lib/Target/X86/X86InstructionSelector.cpp
@@ -1219,7 +1219,7 @@ bool X86InstructionSelector::emitExtractSubreg(unsigned DstReg, unsigned SrcReg,
 
   if (!RBI.constrainGenericRegister(SrcReg, *SrcRC, MRI) ||
       !RBI.constrainGenericRegister(DstReg, *DstRC, MRI)) {
-    LLVM_DEBUG(dbgs() << "Failed to constrain G_TRUNC\n");
+    LLVM_DEBUG(dbgs() << "Failed to constrain EXTRACT_SUBREG\n");
     return false;
   }