diff --git a/engines/director/lingo/lingo-gr.cpp b/engines/director/lingo/lingo-gr.cpp
index 744049e4dc9..9f4fe490764 100644
--- a/engines/director/lingo/lingo-gr.cpp
+++ b/engines/director/lingo/lingo-gr.cpp
@@ -2290,7 +2290,7 @@ yyreduce:
 		WRITE_UINT32(&finish, (yyvsp[(7) - (11)].code) - (yyvsp[(1) - (11)].code));
 		WRITE_UINT32(&body, (yyvsp[(9) - (11)].code) - (yyvsp[(1) - (11)].code));
 		WRITE_UINT32(&end, (yyvsp[(10) - (11)].code) - (yyvsp[(1) - (11)].code));
-		WRITE_UINT32(&inc, -1);
+		WRITE_UINT32(&inc, (uint32)-1);
 		(*g_lingo->_currentScript)[(yyvsp[(1) - (11)].code) + 1] = init;	/* initial count value */
 		(*g_lingo->_currentScript)[(yyvsp[(1) - (11)].code) + 2] = finish;/* final count value */
 		(*g_lingo->_currentScript)[(yyvsp[(1) - (11)].code) + 3] = body;	/* body of loop */
diff --git a/engines/director/lingo/lingo-gr.y b/engines/director/lingo/lingo-gr.y
index 08af7804659..974105573aa 100644
--- a/engines/director/lingo/lingo-gr.y
+++ b/engines/director/lingo/lingo-gr.y
@@ -236,7 +236,7 @@ stmt: stmtoneliner
 		WRITE_UINT32(&finish, $7 - $1);
 		WRITE_UINT32(&body, $9 - $1);
 		WRITE_UINT32(&end, $10 - $1);
-		WRITE_UINT32(&inc, -1);
+		WRITE_UINT32(&inc, (uint32)-1);
 		(*g_lingo->_currentScript)[$1 + 1] = init;	/* initial count value */
 		(*g_lingo->_currentScript)[$1 + 2] = finish;/* final count value */
 		(*g_lingo->_currentScript)[$1 + 3] = body;	/* body of loop */
diff --git a/engines/director/lingo/lingo-lex.cpp b/engines/director/lingo/lingo-lex.cpp
index 1f5d81d6688..7b98269f2f3 100644
--- a/engines/director/lingo/lingo-lex.cpp
+++ b/engines/director/lingo/lingo-lex.cpp
@@ -333,7 +333,7 @@ void yyfree (void *  );
 
 /* Begin user sect3 */
 
-#define yywrap(n) 1
+#define yywrap() 1
 #define YY_SKIP_YYWRAP
 
 typedef unsigned char YY_CHAR;
@@ -1648,7 +1648,7 @@ case YY_STATE_EOF(INITIAL):
 				{
 				(yy_did_buffer_switch_on_eof) = 0;
 
-				if ( yywrap( ) )
+				if ( yywrap() )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1947,7 +1947,7 @@ static int yy_get_next_buffer (void)
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( yywrap( ) )
+					if ( yywrap() )
 						return 0;
 
 					if ( ! (yy_did_buffer_switch_on_eof) )