diff --git a/src/disc_fdi.c b/src/disc_fdi.c
index 97ff1022a..fd451c16c 100644
--- a/src/disc_fdi.c
+++ b/src/disc_fdi.c
@@ -322,7 +322,7 @@ void fdi_poll()
 {
         int tempi, c;
         int bitcount;
-	int side = fdd_get_head(drive);
+	int side = fdd_get_head(fdi_drive);
 
         for (bitcount = 0; bitcount < 16; bitcount++)
         {