diff --git a/test/Misc/warning-flags-enabled.c b/test/Misc/warning-flags-enabled.c
index 359ba70..1c1c38f 100644
--- a/test/Misc/warning-flags-enabled.c
+++ b/test/Misc/warning-flags-enabled.c
@@ -1,4 +1,4 @@
-// RUN: diagtool show-enabled %s 2>&1 | FileCheck %s
+// RUN: diagtool show-enabled %s | FileCheck %s
 //
 // This shows warnings which are on by default.
 // We just check a few to make sure it's doing something sensible.
@@ -8,18 +8,18 @@
 // CHECK: warn_unterminated_string
 
 
-// RUN: diagtool show-enabled -Wno-everything %s 2>&1 | count 0
+// RUN: diagtool show-enabled -Wno-everything %s | count 0
 
 
-// RUN: diagtool show-enabled -Wno-everything -Wobjc-root-class %s 2>&1 | FileCheck -check-prefix CHECK-WARN %s
-// RUN: diagtool show-enabled -Wno-everything -Werror=objc-root-class %s 2>&1 | FileCheck -check-prefix CHECK-ERROR %s
-// RUN: diagtool show-enabled -Wno-everything -Wfatal-errors=objc-root-class %s 2>&1 | FileCheck -check-prefix CHECK-FATAL %s
+// RUN: diagtool show-enabled -Wno-everything -Wobjc-root-class %s | FileCheck -check-prefix CHECK-WARN %s
+// RUN: diagtool show-enabled -Wno-everything -Werror=objc-root-class %s | FileCheck -check-prefix CHECK-ERROR %s
+// RUN: diagtool show-enabled -Wno-everything -Wfatal-errors=objc-root-class %s | FileCheck -check-prefix CHECK-FATAL %s
 //
 // CHECK-WARN:  W  warn_objc_root_class_missing [-Wobjc-root-class]
 // CHECK-ERROR: E  warn_objc_root_class_missing [-Wobjc-root-class]
 // CHECK-FATAL: F  warn_objc_root_class_missing [-Wobjc-root-class]
 
-// RUN: diagtool show-enabled --no-levels -Wno-everything -Wobjc-root-class %s 2>&1 | FileCheck -check-prefix CHECK-NO-LEVELS %s
+// RUN: diagtool show-enabled --no-levels -Wno-everything -Wobjc-root-class %s | FileCheck -check-prefix CHECK-NO-LEVELS %s
 //
 // CHECK-NO-LEVELS-NOT: W
 // CHECK-NO-LEVELS-NOT: E