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-rw-r--r--unittest/test_HOTP.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/unittest/test_HOTP.cc b/unittest/test_HOTP.cc
index 520faaf..c13fb8e 100644
--- a/unittest/test_HOTP.cc
+++ b/unittest/test_HOTP.cc
@@ -36,7 +36,8 @@ using namespace nitrokey::misc;
void hexStringToByte(uint8_t data[], const char* hexString){
REQUIRE(strlen(hexString)%2==0);
- char buf[2];
+ char buf[3];
+ buf[2] = '\0';
for(int i=0; i<strlen(hexString); i++){
buf[i%2] = hexString[i];
if (i%2==1){