diff --git a/compiler-rt/test/sanitizer_common/TestCases/scanf.c b/compiler-rt/test/sanitizer_common/TestCases/scanf.c
index a7f35c2af57eea..a42d9f72a71d92 100644
--- a/compiler-rt/test/sanitizer_common/TestCases/scanf.c
+++ b/compiler-rt/test/sanitizer_common/TestCases/scanf.c
@@ -1,6 +1,6 @@
 // RUN: %clang -std=c17 %s -o %t && %run %t
 /// Test __isoc23_* for glibc 2.38+.
-// RUN: %clang -std=c23 %s -o %t && %run %t
+// RUN: %clang -std=c2x %s -o %t && %run %t
 
 #include <assert.h>
 #include <stdarg.h>
diff --git a/compiler-rt/test/sanitizer_common/TestCases/strtol.c b/compiler-rt/test/sanitizer_common/TestCases/strtol.c
index 9947cdeacd8c31..c3de9bcb7aa040 100644
--- a/compiler-rt/test/sanitizer_common/TestCases/strtol.c
+++ b/compiler-rt/test/sanitizer_common/TestCases/strtol.c
@@ -1,6 +1,6 @@
 // RUN: %clang -std=c17 %s -o %t && %run %t
 /// Test __isoc23_* for glibc 2.38+.
-// RUN: %clang -std=c23 %s -o %t && %run %t
+// RUN: %clang -std=c2x %s -o %t && %run %t
 
 #include <assert.h>
 #include <inttypes.h>