diff --git a/ports/arm/platforms/dm36x/dm36x-io.h b/ports/arm/platforms/dm36x/dm36x-io.h
index c3730fa..f796d6f 100644
--- a/ports/arm/platforms/dm36x/dm36x-io.h
+++ b/ports/arm/platforms/dm36x/dm36x-io.h
@@ -578,8 +578,8 @@
 #define DM36X_MCBSP_XCR     0x10
 #define DM36X_MCBSP_SRGR    0x14
 #define DM36X_MCBSP_MCR     0x18
-#define DM36X_MCBSP_RCER0   0x1C
-#define DM36X_MCBSP_XCER0   0x20
+#define DM36X_MCBSP_RCERE0  0x1C
+#define DM36X_MCBSP_XCERE0  0x20
 #define DM36X_MCBSP_PCR     0x24
 #define DM36X_MCBSP_RCERE1  0x28
 #define DM36X_MCBSP_XCERE1  0x2C