diff --git a/src/arch/x86/include/arch/romstage.h b/src/arch/x86/include/arch/romstage.h
index 7816a7c0bc..2ac225875f 100644
--- a/src/arch/x86/include/arch/romstage.h
+++ b/src/arch/x86/include/arch/romstage.h
@@ -57,12 +57,6 @@ void postcar_frame_add_romcache(struct postcar_frame *pcf, int type);
  */
 void postcar_frame_common_mtrrs(struct postcar_frame *pcf);
 
-/*
- * Push used MTRR and Max MTRRs on to the stack
- * and return pointer to stack top.
- */
-void *postcar_commit_mtrrs(struct postcar_frame *pcf);
-
 /*
  * fill_postcar_frame() is called after raminit completes and right before
  * calling run_postcar_phase(). Implementation should call postcar_frame_add_mtrr()
diff --git a/src/arch/x86/postcar_loader.c b/src/arch/x86/postcar_loader.c
index 4a7d549347..6a7d389ea3 100644
--- a/src/arch/x86/postcar_loader.c
+++ b/src/arch/x86/postcar_loader.c
@@ -147,7 +147,7 @@ void prepare_and_run_postcar(struct postcar_frame *pcf)
 	/* We do not return here. */
 }
 
-void *postcar_commit_mtrrs(struct postcar_frame *pcf)
+static void postcar_commit_mtrrs(struct postcar_frame *pcf)
 {
 	/*
 	 * Place the number of used variable MTRRs on stack then max number
@@ -155,7 +155,6 @@ void *postcar_commit_mtrrs(struct postcar_frame *pcf)
 	 */
 	stack_push(pcf, pcf->num_var_mtrrs);
 	stack_push(pcf, pcf->max_var_mtrrs);
-	return (void *) pcf->stack;
 }
 
 static void finalize_load(uintptr_t *stack_top_ptr, uintptr_t stack_top)