diff --git a/os/various/lwip_bindings/arch/sys_arch.c b/os/various/lwip_bindings/arch/sys_arch.c
index 626c72668..6880ccf18 100644
--- a/os/various/lwip_bindings/arch/sys_arch.c
+++ b/os/various/lwip_bindings/arch/sys_arch.c
@@ -77,7 +77,7 @@ err_t sys_sem_new(sys_sem_t *sem, u8_t count) {
   }
   else {
     chSemInit(*sem, (cnt_t)count);
-    SYS_STATS_INC(sem.used);
+    SYS_STATS_INC_USED(sem);
     return ERR_OK;
   }
 }
diff --git a/readme.txt b/readme.txt
index 27c1756c8..cfccd8dd8 100644
--- a/readme.txt
+++ b/readme.txt
@@ -82,6 +82,7 @@
 *****************************************************************************
 
 *** 2.5.0 ***
+- FIX: Fixed problem with lwIP statistics (bug 3564134)(backported to 2.4.3).
 - FIX: Fixed packed structures macros not functional in IAR and RVCT port
   (bug 3561279)(backported to 2.4.3 and 2.2.10).
 - FIX: Fixed Problem in FatFs demos related to LFN (bug 3560980)(backported