diff --git a/src/libsrc/etherip.pla b/src/libsrc/etherip.pla
index 4ff908c..89d6322 100644
--- a/src/libsrc/etherip.pla
+++ b/src/libsrc/etherip.pla
@@ -234,7 +234,7 @@ asm sum1
 -	CLC
 	INC 	ESTKH,X
 +	BCS	-
- 	LDA 	(SRC),Y
+CHKLP 	LDA 	(SRC),Y
 	PHA
 	INY
 	BNE 	+
diff --git a/src/libsrc/uthernet.pla b/src/libsrc/uthernet.pla
index ab65a43..4d22a1f 100644
--- a/src/libsrc/uthernet.pla
+++ b/src/libsrc/uthernet.pla
@@ -114,7 +114,7 @@ asm pokefrm
 -	CLC
 	INC 	ESTKH,X
 +	BCS	-
-	LDA	(SRC),Y
+POKELP	LDA	(SRC),Y
 end
 asm _pokefrml
 	STA	$C000