diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index cb4ecc60aa473..97cb91bb402c1 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -5044,7 +5044,7 @@ static void upgradeNVVMFnVectorAttr(const StringRef Attr, const char DimC,
   }
 
   const unsigned Dim = DimC - 'x';
-  assert(Dim >= 0 && Dim < 3 && "Unexpected dim char");
+  assert(Dim < 3 && "Unexpected dim char");
 
   const uint64_t VInt = mdconst::extract<ConstantInt>(V)->getZExtValue();