diff --git a/include/c64/iecbus.c b/include/c64/iecbus.c
index a5b9e97..f729d0d 100644
--- a/include/c64/iecbus.c
+++ b/include/c64/iecbus.c
@@ -239,6 +239,7 @@ void iec_talk(char dev, char sec)
 
 	iec_atn(dev | 0x40, sec | 0x60);
 	clock_true();
+	data_false();
 
 	delay(10);	
 }
diff --git a/oscar64/Declaration.cpp b/oscar64/Declaration.cpp
index 011952b..643d493 100644
--- a/oscar64/Declaration.cpp
+++ b/oscar64/Declaration.cpp
@@ -964,7 +964,9 @@ Expression* Expression::ConstantFold(Errors * errors, LinkerSection * dataSectio
 		ex->mDecType = mLeft->mDecType;
 		return ex;
 	}
-	else if (mType == EX_BINARY && mToken == TK_ADD && mLeft->mType == EX_VARIABLE && mLeft->mDecValue->mType == DT_VARIABLE && (mLeft->mDecValue->mFlags & DTF_CONST) && mLeft->mDecType->mType == DT_TYPE_POINTER && mRight->mType == EX_CONSTANT && mRight->mDecValue->mType == DT_CONST_INTEGER)
+	else if (mType == EX_BINARY && mToken == TK_ADD && mLeft->mType == EX_VARIABLE && mLeft->mDecValue->mType == DT_VARIABLE && (mLeft->mDecValue->mFlags & DTF_CONST) && 
+		mLeft->mDecValue->mValue->mType == EX_CONSTANT &&
+		mLeft->mDecType->mType == DT_TYPE_POINTER && mRight->mType == EX_CONSTANT && mRight->mDecValue->mType == DT_CONST_INTEGER)
 	{
 		mLeft = mLeft->mDecValue->mValue;
 		return this->ConstantFold(errors, dataSection);
diff --git a/oscar64/InterCode.cpp b/oscar64/InterCode.cpp
index 87e8b9c..a18b826 100644
--- a/oscar64/InterCode.cpp
+++ b/oscar64/InterCode.cpp
@@ -21016,7 +21016,7 @@ void InterCodeProcedure::Close(void)
 {
 	GrowingTypeArray	tstack(IT_NONE);
 
-	CheckFunc = !strcmp(mIdent->mString, "main");
+	CheckFunc = !strcmp(mIdent->mString, "__drawScreen__");
 	CheckCase = false;
 
 	mEntryBlock = mBlocks[0];