diff --git a/src/system/boot/platform/openfirmware/arch/ppc/arch_start_kernel.S b/src/system/boot/platform/openfirmware/arch/ppc/arch_start_kernel.S
index 89400d2e57..c0c082231c 100644
--- a/src/system/boot/platform/openfirmware/arch/ppc/arch_start_kernel.S
+++ b/src/system/boot/platform/openfirmware/arch/ppc/arch_start_kernel.S
@@ -25,6 +25,10 @@ FUNCTION(arch_start_kernel):
 	// set up the kernel stack
 	subi	%r1, %r5, 16
 
+	// clear the pointer to the previous frame
+	li		%r0, 0
+	stw		%r0, 0(%r1)
+
 	// enter the kernel
 	mtlr	%r4
 	blrl