diff --git a/libcxx/test/libcxx/selftest/gen.cpp/empty.gen.cpp b/libcxx/test/libcxx/selftest/gen.cpp/empty.gen.cpp
index 1915bede471f5e..e0a36db25775e6 100644
--- a/libcxx/test/libcxx/selftest/gen.cpp/empty.gen.cpp
+++ b/libcxx/test/libcxx/selftest/gen.cpp/empty.gen.cpp
@@ -8,4 +8,4 @@
 
 // Make sure we can generate no tests at all
 
-// RUN: true
+// RUN: :
diff --git a/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp b/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp
index 1d8747c7194845..724d03ddb848e1 100644
--- a/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp
+++ b/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp
@@ -8,4 +8,4 @@
 
 // Make sure the test passes if it succeeds to run
 
-// RUN: true
+// RUN: :