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-rw-r--r--apps/errstr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/apps/errstr.c b/apps/errstr.c
index c2d4fdec35ad..c3fef610fc2d 100644
--- a/apps/errstr.c
+++ b/apps/errstr.c
@@ -108,7 +108,7 @@ int MAIN(int argc, char **argv)
for (i = 1; i < argc; i++) {
if (sscanf(argv[i], "%lx", &l)) {
- ERR_error_string_n(l, buf, sizeof buf);
+ ERR_error_string_n(l, buf, sizeof(buf));
printf("%s\n", buf);
} else {
printf("%s: bad error code\n", argv[i]);