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-rw-r--r--sys/src/cmd/winwatch.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/cmd/winwatch.c b/sys/src/cmd/winwatch.c
index d8feebbe9..988a7cb55 100644
--- a/sys/src/cmd/winwatch.c
+++ b/sys/src/cmd/winwatch.c
@@ -117,7 +117,7 @@ refreshwin(void)
n = atoi(pd[i].name);
if(n == mywinid)
continue;
- if(readfile(label, sizeof(label), "/dev/wsys/%d/label", n) <= 0)
+ if(readfile(label, sizeof(label), "/dev/wsys/%d/label", n) < 0)
continue;
if(exclude != nil && regexec(exclude,label,nil,0))
continue;