diff --git a/configs/kwikstik-k40/ostest/defconfig b/configs/kwikstik-k40/ostest/defconfig
index 833511a877..3b0eb3ca09 100755
--- a/configs/kwikstik-k40/ostest/defconfig
+++ b/configs/kwikstik-k40/ostest/defconfig
@@ -76,7 +76,7 @@ CONFIG_ARCH_CHIP=kinetis
 CONFIG_ARCH_CHIP_MK40X256VLQ100=y
 CONFIG_ARCH_BOARD=kwikstik-k40
 CONFIG_ARCH_BOARD_KWIKSTIK_K40=y
-CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff8000
 CONFIG_DRAM_SIZE= 0x00010000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
diff --git a/configs/twr-k60n512/nsh/defconfig b/configs/twr-k60n512/nsh/defconfig
index 25c20d7647..76569ab6f2 100644
--- a/configs/twr-k60n512/nsh/defconfig
+++ b/configs/twr-k60n512/nsh/defconfig
@@ -76,7 +76,7 @@ CONFIG_ARCH_CHIP=kinetis
 CONFIG_ARCH_CHIP_MK60N512VMD100=y
 CONFIG_ARCH_BOARD=twr-k60n512
 CONFIG_ARCH_BOARD_TWR_K60N512=y
-CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff0000
 CONFIG_DRAM_SIZE=0x00020000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
diff --git a/configs/twr-k60n512/ostest/defconfig b/configs/twr-k60n512/ostest/defconfig
index 0a758f050a..2c3f845365 100644
--- a/configs/twr-k60n512/ostest/defconfig
+++ b/configs/twr-k60n512/ostest/defconfig
@@ -76,7 +76,7 @@ CONFIG_ARCH_CHIP=kinetis
 CONFIG_ARCH_CHIP_MK60N512VMD100=y
 CONFIG_ARCH_BOARD=twr-k60n512
 CONFIG_ARCH_BOARD_TWR_K60N512=y
-CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_BOARD_LOOPSPERMSEC=9535
 CONFIG_DRAM_START=0x1fff0000
 CONFIG_DRAM_SIZE=0x00020000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)