diff --git a/arch/arm/src/armv6-m/vfork.S b/arch/arm/src/armv6-m/vfork.S
index 0e9b9790df1..112d2d88da2 100644
--- a/arch/arm/src/armv6-m/vfork.S
+++ b/arch/arm/src/armv6-m/vfork.S
@@ -119,9 +119,8 @@ vfork:
 	mov		r6, r10
 	mov		r7, fp
 	stmia	r1!, {r4-r7}			/* Save r8-r10 and fp in the structure */
-	str		r0, [r1, #0]			/* Save the stack pointer in the structure */
-	mov		r0, r14					/* Copy lr to a low registers */
-	str		r0, [r1, #0]			/* Save the stack pointer in the structure */
+	mov		r5, lr					/* Copy lr to a low register */
+	stmia	r1!, {r0,r5}			/* Save sp and lr in the structure */
 
 	/* Then, call up_vfork(), passing it a pointer to the stack structure */
 
diff --git a/arch/arm/src/common/up_vfork.c b/arch/arm/src/common/up_vfork.c
index a6fe6c8731d..6340cb3b8a1 100644
--- a/arch/arm/src/common/up_vfork.c
+++ b/arch/arm/src/common/up_vfork.c
@@ -134,11 +134,12 @@ pid_t up_vfork(const struct vfork_s *context)
   uint32_t stackutil;
   int ret;
 
-  svdbg("r4:%08x r5:%08x r6:%08x r7:%08x\n",
+  svdbg("vfork context [%p]:\n", context);
+  svdbg("  r4:%08x r5:%08x r6:%08x r7:%08x\n",
         context->r4, context->r5, context->r6, context->r7);
-  svdbg("r8:%08x r9:%08x r10:%08x\n",
+  svdbg("  r8:%08x r9:%08x r10:%08x\n",
         context->r8, context->r9, context->r10);
-  svdbg("fp:%08x sp:%08x lr:%08x\n",
+  svdbg("  fp:%08x sp:%08x lr:%08x\n",
         context->fp, context->sp, context->lr);
 
   /* Allocate and initialize a TCB for the child task. */
diff --git a/configs/nutiny-nuc120/ostest/defconfig b/configs/nutiny-nuc120/ostest/defconfig
index 3256fb1eb30..a8c8e26bb69 100644
--- a/configs/nutiny-nuc120/ostest/defconfig
+++ b/configs/nutiny-nuc120/ostest/defconfig
@@ -85,7 +85,7 @@ CONFIG_ARCH_CHIP="nuc1xx"
 CONFIG_ARCH_HAVE_CMNVECTOR=y
 # CONFIG_ARMV7M_CMNVECTOR is not set
 # CONFIG_ARCH_HAVE_MPU is not set
-CONFIG_BOARD_LOOPSPERMSEC=6522
+CONFIG_BOARD_LOOPSPERMSEC=2988
 # CONFIG_ARCH_CALIBRATION is not set
 
 #
@@ -472,7 +472,7 @@ CONFIG_EXAMPLES_OSTEST_LOOPS=1
 CONFIG_EXAMPLES_OSTEST_STACKSIZE=1536
 CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
 CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
-CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
+CONFIG_EXAMPLES_OSTEST_RR_RUNS=1
 # CONFIG_EXAMPLES_PASHELLO is not set
 # CONFIG_EXAMPLES_PIPE is not set
 # CONFIG_EXAMPLES_POLL is not set