diff --git a/src/id/trace32.a b/src/id/trace32.a
index 191d909..8c3ee2c 100644
--- a/src/id/trace32.a
+++ b/src/id/trace32.a
@@ -197,6 +197,9 @@ TraceDOS32LO
          lda   #>.RDOS13Hook
          sta   jCallRWTS+2
 
+         lda   $BC76
+         cmp   #$D5
+         beq   .patchmap
          lda   #$C9       ; override address prologue to avoid reliance on $48
          sta   $BC75
          lda   #$D4
diff --git a/src/patchers/ssi.a b/src/patchers/ssi.a
index a5ef41d..d2b7de6 100644
--- a/src/patchers/ssi.a
+++ b/src/patchers/ssi.a
@@ -9,8 +9,9 @@
          ldy   gIsRDOS13
          bne   .exit
 
-         ldy   #$0D
+         ldy   #$0F
          jsr   SearchTrack
+         !byte $85,$00    ; STA $00
          !byte $F0,$17    ; BEQ *+$19
          !byte $20,$65,$BC; JSR $BC65
          !byte $B0,$F7    ; BCS *-7
@@ -27,7 +28,7 @@
          pla
          ldy   #$01
          jsr   modify
-         !byte $D0        ; BNE
+         !byte $A9        ; LDA #$..
 
 .exit
 }