diff --git a/mlir/lib/IR/AsmPrinter.cpp b/mlir/lib/IR/AsmPrinter.cpp
--- a/mlir/lib/IR/AsmPrinter.cpp
+++ b/mlir/lib/IR/AsmPrinter.cpp
@@ -2742,7 +2742,7 @@
   // TODO: Improve BlockArgument print'ing.
   BlockArgument arg = this->cast<BlockArgument>();
   os << "<block argument> of type '" << arg.getType()
-     << "' at index: " << arg.getArgNumber() << '\n';
+     << "' at index: " << arg.getArgNumber();
 }
 void Value::print(raw_ostream &os, AsmState &state) {
   if (auto *op = getDefiningOp())
@@ -2751,7 +2751,7 @@
   // TODO: Improve BlockArgument print'ing.
   BlockArgument arg = this->cast<BlockArgument>();
   os << "<block argument> of type '" << arg.getType()
-     << "' at index: " << arg.getArgNumber() << '\n';
+     << "' at index: " << arg.getArgNumber();
 }
 
 void Value::dump() {