diff --git a/src/common/ioutil.c b/src/common/ioutil.c
index d709a0c..6dbc3c5 100644
--- a/src/common/ioutil.c
+++ b/src/common/ioutil.c
@@ -110,8 +110,11 @@ int open_and_mmap(const char* filename, int* out_fd, uint64_t *out_size, void **
 			warn("mmap64() failed");
 			return -1;
 		}
+		debug("opened %s size %ld on fd %d @ %p", filename, size, *out_fd, *out_map);
+	}
+	else {
+		debug("opened %s size %ld on fd %d", filename, size, *out_fd);
 	}
-	debug("opened %s size %ld on fd %d @ %p", filename, size, *out_fd, *out_map);
 
 	return 0;
 }