diff --git a/src/Mayaqua/Win32.c b/src/Mayaqua/Win32.c
index db00184c..b14d9cc2 100644
--- a/src/Mayaqua/Win32.c
+++ b/src/Mayaqua/Win32.c
@@ -3341,7 +3341,7 @@ char *Win32InputFromFileLineA()
 	while (true)
 	{
 		char c;
-		UINT read_size = 0;
+		DWORD read_size = 0;
 
 		if (ReadFile(hstdin, &c, 1, &read_size, NULL) == false)
 		{