diff --git a/compiler-rt/test/msan/libatomic.c b/compiler-rt/test/msan/libatomic.c
index b230a0972c6d..5d8aa9ab6a60 100644
--- a/compiler-rt/test/msan/libatomic.c
+++ b/compiler-rt/test/msan/libatomic.c
@@ -2,6 +2,10 @@
 // RUN: %clangxx_msan -fsanitize-memory-track-origins=0 -latomic -DTEST_LOAD -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
 // RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -latomic -DTEST_LOAD -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-SHADOW
 
+// PPC has no libatomic
+// UNSUPPORTED: powerpc64-target-arch
+// UNSUPPORTED: powerpc64le-target-arch
+
 #include <sanitizer/msan_interface.h>
 #include <stdatomic.h>