diff --git a/cde/programs/dtspcd/spcd_event.c b/cde/programs/dtspcd/spcd_event.c
index 01fdf28b1..2a30c7fcc 100644
--- a/cde/programs/dtspcd/spcd_event.c
+++ b/cde/programs/dtspcd/spcd_event.c
@@ -86,8 +86,13 @@ void SPCD_MainLoopUntil(Boolean *flag)
   int result;
   do {
     for (n=0; n<fd_vec_size; n++) {
+#if defined(linux)
+      input_mask.__fds_bits[n] = Sb_Input_Mask.__fds_bits[n];
+      except_mask.__fds_bits[n] = Sb_Except_Mask.__fds_bits[n];
+#else
       input_mask.fds_bits[n] = Sb_Input_Mask.fds_bits[n];
       except_mask.fds_bits[n] = Sb_Except_Mask.fds_bits[n];
+#endif
     }
     
     do result=select(SPCD_max_fd + 1, FD_SET_CAST(&input_mask),