diff --git a/dlls/hal/hal.c b/dlls/hal/hal.c
index bca688e54e8..79bbfed401f 100644
--- a/dlls/hal/hal.c
+++ b/dlls/hal/hal.c
@@ -156,6 +156,12 @@ KIRQL WINAPI KeGetCurrentIrql(VOID)
     return 0;
 }
 
+UCHAR WINAPI READ_PORT_UCHAR(UCHAR *port)
+{
+    FIXME("(%p) stub!\n", port);
+    return 0;
+}
+
 ULONG WINAPI READ_PORT_ULONG(ULONG *port)
 {
     FIXME("(%p) stub!\n", port);
diff --git a/dlls/hal/hal.spec b/dlls/hal/hal.spec
index 02f778cb17e..071eba54d67 100644
--- a/dlls/hal/hal.spec
+++ b/dlls/hal/hal.spec
@@ -81,7 +81,7 @@
 @ stub READ_PORT_BUFFER_UCHAR
 @ stub READ_PORT_BUFFER_ULONG
 @ stub READ_PORT_BUFFER_USHORT
-@ stub READ_PORT_UCHAR
+@ stdcall READ_PORT_UCHAR(ptr)
 @ stdcall READ_PORT_ULONG(ptr)
 @ stub READ_PORT_USHORT
 @ stub WRITE_PORT_BUFFER_UCHAR