diff --git a/avr/modules/network/iface.asm b/avr/modules/network/iface.asm
index b0174f9..1ed7baa 100644
--- a/avr/modules/network/iface.asm
+++ b/avr/modules/network/iface.asm
@@ -205,16 +205,21 @@ NET_Interface_SetIfaceNumInBuffer:
 ; @clobbers R16
 
 NET_Interface_Periodically:
-  ldd r16, Y+NET_IFACE_OFFS_READTIMER
-  inc r16
-  breq NET_Interface_Periodically_l1
-  std Y+NET_IFACE_OFFS_READTIMER, r16
+  push r15
+    in r15, SREG
+    cli
+    ldd r16, Y+NET_IFACE_OFFS_READTIMER
+    inc r16
+    breq NET_Interface_Periodically_l1
+    std Y+NET_IFACE_OFFS_READTIMER, r16
 NET_Interface_Periodically_l1:
-  ldd r16, Y+NET_IFACE_OFFS_WRITETIMER
-  inc r16
-  breq NET_Interface_Periodically_l2
-  std Y+NET_IFACE_OFFS_WRITETIMER, r16
+    ldd r16, Y+NET_IFACE_OFFS_WRITETIMER
+    inc r16
+    breq NET_Interface_Periodically_l2
+    std Y+NET_IFACE_OFFS_WRITETIMER, r16
 NET_Interface_Periodically_l2:
+    out SREG, r15
+  pop r15
   ret
 ; @end
 
@@ -227,15 +232,21 @@ NET_Interface_Periodically_l2:
 ; @clobbers R16, R17, X
 
 NET_Interface_ResetStats:
-  clr r16
-  std Y+NET_IFACE_OFFS_PACKETSIN_LOW, r16
-  
-  mov xl, yl
-  mov xh, yh
-  adiw xh:xl, NET_IFACE_OFFS_PACKETSIN_LOW
-  ldi r17, ((NET_IFACE_OFFS_ERR_BUSY_HIGH+1)-NET_IFACE_OFFS_PACKETSIN_LOW)
-  clr r16
-  rjmp Utils_FillSram         ; (R17, X)
+  push r15
+    in r15, SREG
+    cli
+    clr r16
+    std Y+NET_IFACE_OFFS_PACKETSIN_LOW, r16
+    
+    mov xl, yl
+    mov xh, yh
+    adiw xh:xl, NET_IFACE_OFFS_PACKETSIN_LOW
+    ldi r17, ((NET_IFACE_OFFS_ERR_BUSY_HIGH+1)-NET_IFACE_OFFS_PACKETSIN_LOW)
+    clr r16
+    rcall Utils_FillSram         ; (R17, X)
+    out SREG, r15
+  pop r15
+  ret
 ; @end