diff --git a/Project/applications/smartcities/buffer.c b/Project/applications/smartcities/buffer.c
index 8e0b767..a0461a6 100644
--- a/Project/applications/smartcities/buffer.c
+++ b/Project/applications/smartcities/buffer.c
@@ -31,7 +31,7 @@ int check_memory(){
 	
 	int mem_free=libwismart_GetMemFree_Ram().free_core;
 	printf("- free_core:    %d     %d\r\n", mem_free, MAX_RAM-mem_free);
-	printf("- free:         %d     %d\r\n", libwismart_GetMemFree_Ram().free, MAX_RAM-mem_free - libwismart_GetMemFree_Ram().free);
+	printf("- free:         %d     %d\r\n", libwismart_GetMemFree_Ram().free, MAX_RAM- libwismart_GetMemFree_Ram().free);
 	printf("- free_chibios: %d     %d\r\n", libwismart_GetMemFree_Ram().free_chibios, MAX_RAM-libwismart_GetMemFree_Ram().free_chibios);
 	size_t heapsize;
 	chHeapStatus(NULL, &heapsize);