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-rw-r--r--sys/src/cmd/cpp/nlist.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/cmd/cpp/nlist.c b/sys/src/cmd/cpp/nlist.c
index a564cb669..e0d771fa6 100644
--- a/sys/src/cmd/cpp/nlist.c
+++ b/sys/src/cmd/cpp/nlist.c
@@ -168,7 +168,7 @@ setup(int argc, char **argv)
dp[len] = '\0';
}
fp = (char*)newstring((uchar*)argv[0], strlen(argv[0]), 0);
- if ((fd = open(fp, 0)) <= 0)
+ if ((fd = open(fp, 0)) < 0)
error(FATAL, "Can't open input file %s", fp);
}
if (argc > 1) {