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-rw-r--r--subx/060read.subx2
1 files changed, 1 insertions, 1 deletions
diff --git a/subx/060read.subx b/subx/060read.subx
index cedafbf5..d377a1ad 100644
--- a/subx/060read.subx
+++ b/subx/060read.subx
@@ -51,7 +51,7 @@ read:  # f : fd or (address stream), s : (address stream) -> num-bytes-read/EAX
     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
     # if (f < 0x08000000) return _read(f, s)  # f can't be a user-mode address, so treat it as a kernel file descriptor
     81          7/subop/compare     1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         0x08000000/imm32  # compare *(EBP+8)
-    7d/jump-if-greater-or-equal  $read:fake/disp8
+    73/jump-if-greater-unsigned-or-equal  $read:fake/disp8
     # . . push args
     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           0xc/disp8       .                 # push *(EBP+12)
     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)