diff --git a/board/netstal/hcu5/sdram.c b/board/netstal/hcu5/sdram.c
index f59bd7d..5c2ec35 100644
--- a/board/netstal/hcu5/sdram.c
+++ b/board/netstal/hcu5/sdram.c
@@ -144,7 +144,7 @@
 	u32 *magicPtr;
 	u32 magic;
 
-	if ((mfspr(dbcr0) & 0x80000000) == 0) {
+	if ((mfspr(SPRN_DBCR0) & 0x80000000) == 0) {
 		/* only if no external debugger is alive!
 		 * Check whether vxWorks is using EDR logging, if yes zero
 		 * also PostMortem and user reserved memory
@@ -182,7 +182,7 @@
 	 * If not done, then we could get an interrupt later on when
 	 * exceptions are enabled.
 	 */
-	mtspr(mcsr, mfspr(mcsr));
+	mtspr(SPRN_MCSR, mfspr(SPRN_MCSR));
 
 	/* Set 'int_mask' parameter to functionnal value */
 	mfsdram(DDR0_01, val);