diff --git a/Libraries/PeriphDrivers/Source/UART/uart_me15.c b/Libraries/PeriphDrivers/Source/UART/uart_me15.c
index 76a81b280cb..4f4821f70f6 100644
--- a/Libraries/PeriphDrivers/Source/UART/uart_me15.c
+++ b/Libraries/PeriphDrivers/Source/UART/uart_me15.c
@@ -135,7 +135,7 @@ int MXC_UART_Shutdown(mxc_uart_regs_t *uart)
     case 3:
         MXC_SYS_Reset_Periph(MXC_SYS_RESET_UART3);
         MXC_SYS_ClockDisable(MXC_SYS_PERIPH_CLOCK_UART3);
-        MXC_MCR->lppioctrl |= ~(MXC_F_MCR_LPPIOCTRL_LPUART0_RX | MXC_F_MCR_LPPIOCTRL_LPUART0_TX |
+        MXC_MCR->lppioctrl &= ~(MXC_F_MCR_LPPIOCTRL_LPUART0_RX | MXC_F_MCR_LPPIOCTRL_LPUART0_TX |
                                 MXC_F_MCR_LPPIOCTRL_LPUART0_RTS | MXC_F_MCR_LPPIOCTRL_LPUART0_CTS);
         break;