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-rw-r--r--Libraries/LibC/stdlib.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Libraries/LibC/stdlib.cpp b/Libraries/LibC/stdlib.cpp
index b65455214b..9e91be3061 100644
--- a/Libraries/LibC/stdlib.cpp
+++ b/Libraries/LibC/stdlib.cpp
@@ -186,7 +186,7 @@ __attribute__((warn_unused_result)) int __generate_unique_filename(char* pattern
for (int attempt = 0; attempt < 100; ++attempt) {
for (int i = 0; i < 6; ++i)
- pattern[start + i] = random_characters[(rand() % sizeof(random_characters))];
+ pattern[start + i] = random_characters[(rand() % (sizeof(random_characters) - 1))];
struct stat st;
int rc = lstat(pattern, &st);
if (rc < 0 && errno == ENOENT)