diff --git a/arch/mips/src/mips32/up_copystate.c b/arch/mips/src/mips32/up_copystate.c
index 0f5909aa2ed..1bafffd0e3d 100644
--- a/arch/mips/src/mips32/up_copystate.c
+++ b/arch/mips/src/mips32/up_copystate.c
@@ -70,7 +70,7 @@ void up_copystate(uint32_t *dest, uint32_t *src)
 {
   int i;
 
-  /* In the Cortex-M3 model, the state is copied from the stack to the TCB,
+  /* In the MIPS model, the state is copied from the stack to the TCB,
    * but only a reference is passed to get the state from the TCB.  So the
    * following check avoids copying the TCB save area onto itself:
    */
diff --git a/arch/mips/src/pic32mx/pic32mx-head.S b/arch/mips/src/pic32mx/pic32mx-head.S
index 065598ec6fa..3a9c6c0e083 100644
--- a/arch/mips/src/pic32mx/pic32mx-head.S
+++ b/arch/mips/src/pic32mx/pic32mx-head.S
@@ -434,7 +434,7 @@ _bev_handler:
 	move	a0, sp					/* Pass register save structure as the parameter 1 */
 	USE_INTSTACK t0, t1, t2			/* Switch to the interrupt stack */
 	la		t0, pic32mx_dobev		/* Call up_dobev(regs) */
-	jalr	t0, ra
+	jalr	ra, t0
 	di								/* Disable interrupts */
 	RESTORE_STACK t0, t1			/* Undo the operations of USE_STACK */
 	EXCPT_EPILOGUE v0				/* Return to the context returned by up_dobev() */
@@ -456,7 +456,7 @@ _int_handler:
 	move	a0, sp					/* Pass register save structure as the parameter 1 */
 	USE_INTSTACK t0, t1, t2			/* Switch to the interrupt stack */
 	la		t0, pic32mx_decodeirq	/* Call pic32mx_decodeirq(regs) */
-	jalr	t0, ra
+	jalr	ra, t0
 	di								/* Disable interrupts */
 	RESTORE_STACK t0, t1			/* Undo the operations of USE_STACK */
 	EXCPT_EPILOGUE v0				/* Return to the context returned by pic32mx_decodeirq() */
@@ -479,7 +479,7 @@ _nmi_handler:
 	move	a0, sp					/* Pass register save structure as the parameter 1 */
 	USE_INTSTACK t0, t1, t2			/* Switch to the interrupt stack */
 	la		t0, pic32mx_donmi		/* Call up_donmi(regs) */
-	jalr	t0, ra
+	jalr	ra, t0
 	di								/* Disable interrupts */
 	RESTORE_STACK t0, t1			/* Undo the operations of USE_STACK */
 	EXCPT_EPILOGUE v0				/* Return to the context returned by pic32mx_donmi() */
@@ -505,13 +505,13 @@ __start_nuttx:
 	/* Perform low level initialization */
 
 	la		t0, pic32mx_lowinit
-	jalr	t0, ra
+	jalr    ra, t0
 	nop
 
 	/* Call os_start */
 
 	la		t0, os_start
-	jalr	t0, ra
+	jalr	ra, t0
 	nop
 
 	/* Just in case main returns, go into an infinite loop */