diff --git a/compiler-rt/test/lsan/lit.common.cfg.py b/compiler-rt/test/lsan/lit.common.cfg.py
index e1e496b09e36e6..208d9f92eeb0c4 100644
--- a/compiler-rt/test/lsan/lit.common.cfg.py
+++ b/compiler-rt/test/lsan/lit.common.cfg.py
@@ -70,9 +70,9 @@ def build_invocation(compile_flags):
 config.substitutions.append( ("%clangxx_lsan ", build_invocation(clang_lsan_cxxflags)) )
 
 # LeakSanitizer tests are currently supported on x86-64 Linux, PowerPC64 Linux, arm Linux, mips64 Linux, and x86_64 Darwin.
-supported_linux = config.host_os is 'Linux' and config.host_arch in ['x86_64', 'ppc64', 'ppc64le', 'mips64', 'arm', 'armhf', 'armv7l']
-supported_darwin = config.host_os is 'Darwin' and config.target_arch is 'x86_64'
-supported_netbsd = config.host_os is 'NetBSD' and config.target_arch in ['x86_64', 'i386']
+supported_linux = config.host_os == 'Linux' and config.host_arch in ['x86_64', 'ppc64', 'ppc64le', 'mips64', 'arm', 'armhf', 'armv7l']
+supported_darwin = config.host_os == 'Darwin' and config.target_arch in ['x86_64']
+supported_netbsd = config.host_os == 'NetBSD' and config.target_arch in ['x86_64', 'i386']
 if not (supported_linux or supported_darwin or supported_netbsd):
   config.unsupported = True