diff --git a/clocks/cricket/cricket.system.s b/clocks/cricket/cricket.system.s
index 0529777..c3d4fad 100644
--- a/clocks/cricket/cricket.system.s
+++ b/clocks/cricket/cricket.system.s
@@ -75,6 +75,8 @@ ssc_not_found:
 
         ;; Init SSC and try the "Read Cricket ID code" sequence.
 init_ssc:
+        php
+        sei
         lda     COMMAND         ; save status of SSC registers
         sta     saved_command
         lda     CONTROL
@@ -113,10 +115,12 @@ digit:  cmp     #HI('0')          ; < '0' ?
 
 cricket_found:
         jsr     restore_cmd_ctl
+        plp
         jmp     install_driver
 
 cricket_not_found:
         jsr     restore_cmd_ctl
+        plp
         ;; fall through...
 
 not_found: