diff --git a/demos/ARMCM4-STM32F303-DISCOVERY/.cproject b/demos/ARMCM4-STM32F303-DISCOVERY/.cproject
index 22d0ba952..09344407f 100644
--- a/demos/ARMCM4-STM32F303-DISCOVERY/.cproject
+++ b/demos/ARMCM4-STM32F303-DISCOVERY/.cproject
@@ -48,4 +48,5 @@
 		</scannerConfigBuildInfo>
 	</storageModule>
 	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="refreshScope"/>
 </cproject>
diff --git a/os/ports/GCC/ARMCMx/chcore_v7m.h b/os/ports/GCC/ARMCMx/chcore_v7m.h
index 86921ee64..1afdb42f9 100644
--- a/os/ports/GCC/ARMCMx/chcore_v7m.h
+++ b/os/ports/GCC/ARMCMx/chcore_v7m.h
@@ -165,11 +165,11 @@
 
 /**
  * @brief   PendSV priority level.
- * @note    This priority is enforced to be equal to @p CORTEX_BASEPRI_KERNEL,
- *          this handler always have the highest priority that cannot preempt
- *          the kernel.
+ * @note    This priority is enforced to be equal to
+ *          @p CORTEX_MAX_KERNEL_PRIORITY, this handler always have the
+ *          highest priority that cannot preempt the kernel.
  */
-#define CORTEX_PRIORITY_PENDSV          CORTEX_BASEPRI_KERNEL
+#define CORTEX_PRIORITY_PENDSV          CORTEX_MAX_KERNEL_PRIORITY
 
 /*===========================================================================*/
 /* Port exported info.                                                       */
diff --git a/readme.txt b/readme.txt
index d6ac2df48..aaad8b84e 100644
--- a/readme.txt
+++ b/readme.txt
@@ -91,6 +91,8 @@
 *** 2.7.0 ***
 - FIX: Fixed wrong definition in STM32F37x ADC driver (bug #444)(backported
   to 2.6.2).
+- FIX: Fixed wrong CORTEX_PRIORITY_PENDSV value (bug #443)(backported to
+  2.4.6 and 2.6.2).
 - FIX: Fixed lost incoming characters in STM32 USARTv1 driver (bug #442)
   (backported to 2.4.6 and 2.6.2).
 - FIX: Fixed UART4/5-related bugs in STM32 USARTv1 UART driver (bug #440)