diff --git a/c/src/lib/libcpu/powerpc/mpc55xx/include/siu.h b/c/src/lib/libcpu/powerpc/mpc55xx/include/siu.h
index 91aea51454..d5fe82d738 100644
--- a/c/src/lib/libcpu/powerpc/mpc55xx/include/siu.h
+++ b/c/src/lib/libcpu/powerpc/mpc55xx/include/siu.h
@@ -292,6 +292,8 @@ typedef enum {
     PCR_ETPUC29_SCKD_GPIO470 = 470,
     PCR_ETPUC30_SOUTD_GPIO471 = 471,
     PCR_ETPUC31_SIND_GPIO472 = 472
+  #else
+    PCR_TODO
   #endif
 } pcr_index;