diff --git a/src/lib/platform/OSXScreenSaver.cpp b/src/lib/platform/OSXScreenSaver.cpp
index 0700de65d..43d90f065 100644
--- a/src/lib/platform/OSXScreenSaver.cpp
+++ b/src/lib/platform/OSXScreenSaver.cpp
@@ -161,11 +161,12 @@ void getProcessSerialNumber(const char *name, ProcessSerialNumber &psn)
 
 bool isScreenSaverEngine(const ProcessSerialNumber &psn)
 {
-  CFStringRef processName;
+  CFStringRef processName = nullptr;
   OSStatus err = CopyProcessName(&psn, &processName);
-  bool result = (err == 0 && CFEqual(CFSTR("ScreenSaverEngine"), processName));
-  CFRelease(processName);
-
+  const bool result = (err == 0 && CFEqual(CFSTR("ScreenSaverEngine"), processName));
+  if (processName) {
+    CFRelease(processName);
+  }
   return result;
 }