diff --git a/litesdcard/firmware/sdcard.c b/litesdcard/firmware/sdcard.c
index 86b0181..90c6a3d 100644
--- a/litesdcard/firmware/sdcard.c
+++ b/litesdcard/firmware/sdcard.c
@@ -589,6 +589,8 @@ void sdcard_bist_checker_wait(void) {
 /* user */

 int sdcard_init(void) {
+        unsigned short rca;
+
         /* initialize SD driver parameters */
        sdcore_cmdtimeout_write(1<<19);
        sdcore_datatimeout_write(1<<19);
diff --git a/litesdcard/firmware/sdcard.h b/litesdcard/firmware/sdcard.h
index ede8ab6..7edbc8d 100644
--- a/litesdcard/firmware/sdcard.h
+++ b/litesdcard/firmware/sdcard.h
@@ -44,8 +44,6 @@
 #define SDCARD_CTRL_RESPONSE_SHORT 1
 #define SDCARD_CTRL_RESPONSE_LONG  2

-unsigned short rca;
-
 /* clocking */

 void sdclk_set_clk(unsigned int freq);