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-rw-r--r--MokManager.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/MokManager.c b/MokManager.c
index 77e0c5bf..70fbbadd 100644
--- a/MokManager.c
+++ b/MokManager.c
@@ -1960,7 +1960,7 @@ static BOOLEAN check_der_suffix(CHAR16 * file_name)
return FALSE;
suffix[0] = '\0';
- StrCat(suffix, file_name + StrLen(file_name) - 4);
+ StrnCat(suffix, file_name + StrLen(file_name) - 4, 4);
StrLwr(suffix);
for (i = 0; der_suffix[i] != NULL; i++) {