diff --git a/src/mainboard/digitallogic/msm800sev/cache_as_ram_auto.c b/src/mainboard/digitallogic/msm800sev/cache_as_ram_auto.c
index 6842f09a17..e9dc8aec76 100644
--- a/src/mainboard/digitallogic/msm800sev/cache_as_ram_auto.c
+++ b/src/mainboard/digitallogic/msm800sev/cache_as_ram_auto.c
@@ -114,5 +114,6 @@ void cache_as_ram_main(void)
 	/* we are finding the return does not work on this board. Explicitly call the label that is 
 	 * after the call to us. This is gross, but sometimes at this level it is the only way out
 	 */
+	void done_cache_as_ram_main(void);
 	done_cache_as_ram_main();
 }
diff --git a/src/mainboard/pcengines/alix1c/cache_as_ram_auto.c b/src/mainboard/pcengines/alix1c/cache_as_ram_auto.c
index a05e50a4d8..e7a680cd4d 100644
--- a/src/mainboard/pcengines/alix1c/cache_as_ram_auto.c
+++ b/src/mainboard/pcengines/alix1c/cache_as_ram_auto.c
@@ -206,5 +206,6 @@ void cache_as_ram_main(void)
 	 * call the label that is after the call to us. This is gross, but
 	 * sometimes at this level it is the only way out.
 	 */
+	void done_cache_as_ram_main(void);
 	done_cache_as_ram_main();
 }