diff --git a/Process.cpp b/Process.cpp
index f01fa31..a6f0cc6 100644
--- a/Process.cpp
+++ b/Process.cpp
@@ -66,7 +66,7 @@
 void Process::getProcessName(int pid, char *buffer, size_t max) {
     int fd;
     snprintf(buffer, max, "/proc/%d/cmdline", pid);
-    fd = open(buffer, O_RDONLY);
+    fd = open(buffer, O_RDONLY | O_CLOEXEC);
     if (fd < 0) {
         strcpy(buffer, "???");
     } else {