--- a/security/sandbox/linux/SandboxFilter.cpp
+++ b/security/sandbox/linux/SandboxFilter.cpp
@@ -533,16 +533,17 @@ public:
 #ifdef ANDROID
     case SYS_SOCKET:
       return Some(Error(EACCES));
 #else // #ifdef DESKTOP
     case SYS_RECV:
     case SYS_SEND:
     case SYS_SOCKET: // DANGEROUS
     case SYS_CONNECT: // DANGEROUS
+    case SYS_ACCEPT4: // Used by a11y; see bug 1361238
     case SYS_GETSOCKOPT:
     case SYS_SETSOCKOPT:
     case SYS_GETSOCKNAME:
     case SYS_GETPEERNAME:
     case SYS_SHUTDOWN:
       return Some(Allow());
 #endif
     default: