diff --git a/sys/arm/sa11x0/assabet_machdep.c b/sys/arm/sa11x0/assabet_machdep.c
index dbf34cc0319..4936d66bbf9 100644
--- a/sys/arm/sa11x0/assabet_machdep.c
+++ b/sys/arm/sa11x0/assabet_machdep.c
@@ -153,7 +153,6 @@ struct pv_addr irqstack;
 struct pv_addr undstack;
 struct pv_addr abtstack;
 struct pv_addr kernelstack;
-void enable_mmu(vm_offset_t);
 static struct trapframe proc0_tf;
 
 /* Static device mappings. */
diff --git a/sys/arm/xscale/i80321/iq31244_machdep.c b/sys/arm/xscale/i80321/iq31244_machdep.c
index b6cea9025e7..c3908822f81 100644
--- a/sys/arm/xscale/i80321/iq31244_machdep.c
+++ b/sys/arm/xscale/i80321/iq31244_machdep.c
@@ -147,7 +147,6 @@ struct pv_addr abtstack;
 struct pv_addr kernelstack;
 struct pv_addr minidataclean;
 
-void enable_mmu(vm_offset_t);
 static struct trapframe proc0_tf;
 
 #define IQ80321_OBIO_BASE 0xfe800000UL