1 files changed, 2 insertions, 2 deletions
diff --git a/libqpdf/QUtil.cc b/libqpdf/QUtil.cc
index 4f9c1021..a542736d 100644
--- a/libqpdf/QUtil.cc
+++ b/libqpdf/QUtil.cc
@@ -836,8 +836,8 @@ char*
 QUtil::getWhoami(char* argv0)
 {
     char* whoami = nullptr;
-    if (((whoami = strrchr(argv0, '/')) == NULL) &&
-        ((whoami = strrchr(argv0, '\\')) == NULL)) {
+    if (((whoami = strrchr(argv0, '/')) == nullptr) &&
+        ((whoami = strrchr(argv0, '\\')) == nullptr)) {
         whoami = argv0;
     } else {
         ++whoami;