diff --git a/test/integration/cpp/infallible_new_true.cpp b/test/integration/cpp/infallible_new_true.cpp
index 3976f08b..3b2862bd 100644
--- a/test/integration/cpp/infallible_new_true.cpp
+++ b/test/integration/cpp/infallible_new_true.cpp
@@ -10,7 +10,7 @@ typedef void (*abort_hook_t)(const char *message);
 bool fake_abort_called;
 void fake_abort(const char *message) {
 	const char *expected_start = "<jemalloc>: Allocation of size";
-	if (strncmp(message, expected_start, strlen(expected_start) != 0)) {
+	if (strncmp(message, expected_start, strlen(expected_start)) != 0) {
 		abort();
 	}
 	fake_abort_called = true;
@@ -64,4 +64,3 @@ main(void) {
 	return test(
 	    test_failing_alloc);
 }
-