diff --git a/os/hal/platforms/STM32F0xx/hal_lld.c b/os/hal/platforms/STM32F0xx/hal_lld.c
index 7c5bdce8e..debc51ea3 100644
--- a/os/hal/platforms/STM32F0xx/hal_lld.c
+++ b/os/hal/platforms/STM32F0xx/hal_lld.c
@@ -101,7 +101,7 @@ void hal_lld_init(void) {
 
   /* Reset of all peripherals.*/
   rccResetAPB1(0xFFFFFFFF);
-  rccResetAPB2(!RCC_APB2RSTR_DBGMCURST);
+  rccResetAPB2(~RCC_APB2RSTR_DBGMCURST);
 
   /* SysTick initialization using the system clock.*/
   SysTick->LOAD = STM32_HCLK / CH_FREQUENCY - 1;
diff --git a/os/hal/platforms/STM32F4xx/hal_lld.c b/os/hal/platforms/STM32F4xx/hal_lld.c
index 603371b2c..f72812da9 100644
--- a/os/hal/platforms/STM32F4xx/hal_lld.c
+++ b/os/hal/platforms/STM32F4xx/hal_lld.c
@@ -95,11 +95,11 @@ void hal_lld_init(void) {
 
   /* Reset of all peripherals. AHB3 is not reseted because it could have
      been initialized in the board initialization file (board.c).*/
-  rccResetAHB1(!0);
-  rccResetAHB2(!0);
-  rccResetAHB3(!0);
-  rccResetAPB1(!RCC_APB1RSTR_PWRRST);
-  rccResetAPB2(!0);
+  rccResetAHB1(~0);
+  rccResetAHB2(~0);
+  rccResetAHB3(~0);
+  rccResetAPB1(~RCC_APB1RSTR_PWRRST);
+  rccResetAPB2(~0);
 
   /* SysTick initialization using the system clock.*/
   SysTick->LOAD = STM32_HCLK / CH_FREQUENCY - 1;
diff --git a/os/hal/platforms/STM32L1xx/hal_lld.c b/os/hal/platforms/STM32L1xx/hal_lld.c
index 607893220..529099e6a 100644
--- a/os/hal/platforms/STM32L1xx/hal_lld.c
+++ b/os/hal/platforms/STM32L1xx/hal_lld.c
@@ -94,9 +94,9 @@ static void hal_lld_backup_domain_init(void) {
 void hal_lld_init(void) {
 
   /* Reset of all peripherals.*/
-  rccResetAHB(!RCC_AHBRSTR_FLITFRST);
-  rccResetAPB1(!RCC_APB1RSTR_PWRRST);
-  rccResetAPB2(!0);
+  rccResetAHB(~RCC_AHBRSTR_FLITFRST);
+  rccResetAPB1(~RCC_APB1RSTR_PWRRST);
+  rccResetAPB2(~0);
 
   /* SysTick initialization using the system clock.*/
   SysTick->LOAD = STM32_HCLK / CH_FREQUENCY - 1;
diff --git a/readme.txt b/readme.txt
index 116ef4e14..594592590 100644
--- a/readme.txt
+++ b/readme.txt
@@ -89,6 +89,8 @@
 *****************************************************************************
 
 *** 2.5.2 ***
+- FIX: Fixed STM32 wrong peripherals reset procedure (bug #409)(backported
+  to 2.4.4).
 - FIX: Fixed STM32 SPIv2 polled exchange (bug #372).
 - FIX: Fixed wrong macro in PWM driver (bug #407)(backported to 2.4.4).
 - FIX: Fixed USB driver possible deadlock under certain configurations (bug