diff --git a/backend/ipp.c b/backend/ipp.c
index 8311a1cf9..4a6159da7 100644
--- a/backend/ipp.c
+++ b/backend/ipp.c
@@ -1400,12 +1400,18 @@ main(int  argc,				/* I - Number of command-line args */
     if ((compatsize = write(fd, buffer, (size_t)bytes)) < 0)
     {
       perror("DEBUG: Unable to write temporary file");
+      if (tmpfilename[0])
+	unlink(tmpfilename);
       return (CUPS_BACKEND_FAILED);
     }
 
     if ((bytes = backendRunLoop(-1, fd, snmp_fd, &(addrlist->addr), 0, 0,
 		                backendNetworkSideCB)) < 0)
+    {
+      if (tmpfilename[0])
+	unlink(tmpfilename);
       return (CUPS_BACKEND_FAILED);
+    }
 
     compatsize += bytes;
 
diff --git a/backend/socket.c b/backend/socket.c
index 2186a2ba1..5cc30a5b4 100644
--- a/backend/socket.c
+++ b/backend/socket.c
@@ -313,6 +313,10 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
 
 	sleep(5);
 
+	if (snmp_fd >= 0)
+	  _cupsSNMPClose(snmp_fd);
+	if (print_fd != 0)
+	  close(print_fd);
         return (CUPS_BACKEND_FAILED);
       }
 
@@ -324,6 +328,10 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
 	{
 	  _cupsLangPrintFilter(stderr, "ERROR",
 	                       _("The printer is not responding."));
+	  if (snmp_fd >= 0)
+	    _cupsSNMPClose(snmp_fd);
+	  if (print_fd != 0)
+	    close(print_fd);
 	  return (CUPS_BACKEND_FAILED);
 	}
 
@@ -429,8 +437,6 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
 
   close(device_fd);
 
-  httpAddrFreeList(addrlist);
-
  /*
   * Close the input file and return...
   */