diff --git a/mlir/test/CAPI/ir.c b/mlir/test/CAPI/ir.c
--- a/mlir/test/CAPI/ir.c
+++ b/mlir/test/CAPI/ir.c
@@ -442,9 +442,9 @@
   fprintf(stderr, "Op print with all flags: ");
   mlirOperationPrintWithFlags(operation, flags, printToStderr, NULL);
   fprintf(stderr, "\n");
-  // CHECK: Op print with all flags: %{{.*}} = "std.constant"() {elts =
-  // opaque<"", "0xDEADBEEF"> : tensor<4xi32>, value = 0 : index} : () -> index
-  // loc(unknown)
+  // clang-format off
+  // CHECK: Op print with all flags: %{{.*}} = "std.constant"() {elts = opaque<"", "0xDEADBEEF"> : tensor<4xi32>, value = 0 : index} : () -> index loc(unknown)
+  // clang-format on
 
   mlirOpPrintingFlagsDestroy(flags);
 }