diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc b/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
index 78b9747d8089..e3e9aedce3d6 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
@@ -44,7 +44,7 @@ void SetCommonFlagsDefaults(CommonFlags *f) {
   f->leak_check_at_exit = true;
   f->allocator_may_return_null = false;
   f->print_summary = true;
-  f->check_printf = false;
+  f->check_printf = true;
   // TODO(glider): tools may want to set different defaults for handle_segv.
   f->handle_segv = SANITIZER_NEEDS_SEGV;
   f->allow_user_segv_handler = false;
diff --git a/compiler-rt/test/asan/TestCases/printf-2.c b/compiler-rt/test/asan/TestCases/printf-2.c
index a31d2e56a0da..80137d742981 100644
--- a/compiler-rt/test/asan/TestCases/printf-2.c
+++ b/compiler-rt/test/asan/TestCases/printf-2.c
@@ -3,7 +3,7 @@
 // strlen() and memcpy() called by printf().
 // RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0:check_printf=1 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 // RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0:check_printf=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
-// RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/compiler-rt/test/asan/TestCases/printf-3.c b/compiler-rt/test/asan/TestCases/printf-3.c
index 12ecc6485c38..79f51fe24de6 100644
--- a/compiler-rt/test/asan/TestCases/printf-3.c
+++ b/compiler-rt/test/asan/TestCases/printf-3.c
@@ -1,7 +1,7 @@
 // RUN: %clang_asan -O2 %s -o %t
 // RUN: ASAN_OPTIONS=check_printf=1 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 // RUN: ASAN_OPTIONS=check_printf=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
-// RUN: %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 
 #include <stdio.h>
 int main() {
diff --git a/compiler-rt/test/asan/TestCases/printf-4.c b/compiler-rt/test/asan/TestCases/printf-4.c
index e93c60ca9391..e5f9c4ed74b9 100644
--- a/compiler-rt/test/asan/TestCases/printf-4.c
+++ b/compiler-rt/test/asan/TestCases/printf-4.c
@@ -3,7 +3,7 @@
 // strlen() and memcpy() called by puts().
 // RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0:check_printf=1 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 // RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0:check_printf=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
-// RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: ASAN_OPTIONS=replace_str=0:replace_intrin=0 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 
 #include <stdio.h>
 int main() {
diff --git a/compiler-rt/test/asan/TestCases/printf-5.c b/compiler-rt/test/asan/TestCases/printf-5.c
index 5e90e734fb0f..58f5822569f5 100644
--- a/compiler-rt/test/asan/TestCases/printf-5.c
+++ b/compiler-rt/test/asan/TestCases/printf-5.c
@@ -2,7 +2,7 @@
 // We need replace_intrin=0 to avoid reporting errors in memcpy.
 // RUN: ASAN_OPTIONS=replace_intrin=0:check_printf=1 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 // RUN: ASAN_OPTIONS=replace_intrin=0:check_printf=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
-// RUN: ASAN_OPTIONS=replace_intrin=0 %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: ASAN_OPTIONS=replace_intrin=0 not %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
 
 #include <stdio.h>
 #include <string.h>