diff --git a/clang/lib/Sema/SemaStmtAttr.cpp b/clang/lib/Sema/SemaStmtAttr.cpp
index 82373fe96a824..6f538ed55cb72 100644
--- a/clang/lib/Sema/SemaStmtAttr.cpp
+++ b/clang/lib/Sema/SemaStmtAttr.cpp
@@ -684,10 +684,8 @@ ExprResult Sema::ActOnCXXAssumeAttr(Stmt *St, const ParsedAttr &A,
   }
 
   if (!getLangOpts().CPlusPlus23 &&
-      A.getSyntax() == AttributeCommonInfo::AS_CXX11) {
-    llvm::dbgs() << "Syntax: " << int(A.getSyntax()) << "\n";
+      A.getSyntax() == AttributeCommonInfo::AS_CXX11)
     Diag(A.getLoc(), diag::ext_cxx23_attr) << A << Range;
-  }
 
   return Assumption;
 }