diff --git a/native/android/sharedmem.cpp b/native/android/sharedmem.cpp
index 757aaec..4410bd6 100644
--- a/native/android/sharedmem.cpp
+++ b/native/android/sharedmem.cpp
@@ -71,7 +71,7 @@
     }
     int fd = env->CallIntMethod(javaSharedMemory, sSharedMemory.getFd);
     if (fd != -1) {
-        fd = dup(fd);
+        fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
     }
     return fd;
 }