diff --git a/cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Buildless/second.cpp b/cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Buildless/second.cpp
index 9ebbc4dd6e0..0345e8352be 100644
--- a/cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Buildless/second.cpp	
+++ b/cpp/ql/test/query-tests/Likely Bugs/Format/WrongTypeFormatArguments/Buildless/second.cpp	
@@ -13,8 +13,8 @@ void test_size_t() {
     printf("%zu", s); // GOOD (we generally permit signedness changes)
     printf("%zx", s); // GOOD (we generally permit signedness changes)
     printf("%d", s); // BAD [NOT DETECTED]
-    printf("%ld", s); // BAD [NOT DETECTED]
-    printf("%lld", s); // BAD [NOT DETECTED]
+    printf("%ld", s); // DUBIOUS [NOT DETECTED]
+    printf("%lld", s); // DUBIOUS [NOT DETECTED]
     printf("%u", s); // BAD [NOT DETECTED]
 
     char buffer[1024];
@@ -24,7 +24,9 @@ void test_size_t() {
     printf("%zu", &buffer[1023] - buffer); // GOOD
     printf("%zx", &buffer[1023] - buffer); // GOOD
     printf("%d", &buffer[1023] - buffer); // BAD
-    printf("%ld", &buffer[1023] - buffer); // BAD [NOT DETECTED]
-    printf("%lld", &buffer[1023] - buffer); // BAD [NOT DETECTED]
+    printf("%ld", &buffer[1023] - buffer); // DUBIOUS [NOT DETECTED]
+    printf("%lld", &buffer[1023] - buffer); // DUBIOUS [NOT DETECTED]
     printf("%u", &buffer[1023] - buffer); // BAD
+    // (for the `%ld` and `%lld` cases, the signedness and type sizes match, `%zd` would be most correct
+    //  and robust but the developer may know enough to make this safe)
 }