Index: busybox-1.9.2/procps/top.c
===================================================================
--- busybox-1.9.2.orig/procps/top.c	2008-08-21 16:19:31.004137057 +0200
+++ busybox-1.9.2/procps/top.c	2008-08-21 16:21:46.066805448 +0200
@@ -909,17 +909,22 @@
 #else
 			qsort(top, ntop, sizeof(top_status_t), (void*)(sort_function[0]));
 #endif /* FEATURE_TOP_CPU_USAGE_PERCENTAGE */
-		} else { /* TOPMEM */
+		}
+#if ENABLE_FEATURE_TOPMEM
+		else { /* TOPMEM */
 			qsort(topmem, ntop, sizeof(topmem_status_t), (void*)topmem_sort);
 		}
+#endif
 		count = lines;
 		if (OPT_BATCH_MODE || count > ntop) {
 			count = ntop;
 		}
 		if (scan_mask == TOP_MASK)
 			display_process_list(count, col);
+#if ENABLE_FEATURE_TOPMEM
 		else
 			display_topmem_process_list(count, col);
+#endif
 		clearmems();
 		if (iterations >= 0 && !--iterations)
 			break;