1 files changed, 2 insertions, 3 deletions
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 351386a..3de45bc 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -1218,7 +1218,7 @@ std::string cmSystemTools::ComputeCertificateThumbprint(
                       certContext, CERT_HASH_PROP_ID, hashData, &hashLength)) {
                   for (DWORD i = 0; i < hashLength; i++) {
                     // Convert each byte to hexadecimal
-                    sprintf(pHashPrint, "%02X", hashData[i]);
+                    snprintf(pHashPrint, 3, "%02X", hashData[i]);
                     pHashPrint += 2;
                   }
                   *pHashPrint = '\0';
@@ -1501,8 +1501,7 @@ std::string cmSystemTools::RelativeIfUnder(std::string const& top,
 bool cmSystemTools::UnsetEnv(const char* value)
 {
 #  if !defined(HAVE_UNSETENV)
-  std::string var = cmStrCat(value, '=');
-  return cmSystemTools::PutEnv(var);
+  return cmSystemTools::UnPutEnv(value);
 #  else
   unsetenv(value);
   return true;