diff --git a/Docs/PAL Porting Guide.pdf b/Docs/PAL Porting Guide.pdf
deleted file mode 100644
index b748c71..0000000
Binary files a/Docs/PAL Porting Guide.pdf and /dev/null differ
diff --git a/Docs/PAL_Porting_Guide.pdf b/Docs/PAL_Porting_Guide.pdf
new file mode 100644
index 0000000..e6f2ac1
Binary files /dev/null and b/Docs/PAL_Porting_Guide.pdf differ
diff --git a/Source/PAL-Impl/Modules/RTOS/pal_rtos.c b/Source/PAL-Impl/Modules/RTOS/pal_rtos.c
index 2cb1ae5..645abe3 100644
--- a/Source/PAL-Impl/Modules/RTOS/pal_rtos.c
+++ b/Source/PAL-Impl/Modules/RTOS/pal_rtos.c
@@ -90,7 +90,7 @@ palStatus_t pal_osThreadCreate(palThreadFuncPtr function, void* funcArgument, pa
         status = PAL_ERR_INVALID_ARGUMENT;
     }
 
-    if ((PAL_SUCCESS == status) && (g_palThreadPriorities[priority+PRIORYT_INDEX_OFFSET]))
+    if ((PAL_SUCCESS == status) && (g_palThreadPriorities[priority+PRIORITY_INDEX_OFFSET]))
     {
         *threadID = NULLPTR;
         status = PAL_ERR_RTOS_PRIORITY;
diff --git a/Source/Port/Platform-API/pal_plat_rtos.h b/Source/Port/Platform-API/pal_plat_rtos.h
index 2e33bd1..fa432c1 100644
--- a/Source/Port/Platform-API/pal_plat_rtos.h
+++ b/Source/Port/Platform-API/pal_plat_rtos.h
@@ -44,7 +44,7 @@ extern "C" {
 //! An array of PAL thread priorities. The size of the array is defined in the Service API (pal_rtos.h) by "PAL_MAX_NUMBER_OF_THREADS"
 extern uint8_t g_palThreadPriorities[PAL_MAX_NUMBER_OF_THREADS];
 
-#define PRIORYT_INDEX_OFFSET 3
+#define PRIORITY_INDEX_OFFSET 3
 #endif //PAL_UNIQUE_THREAD_PRIORITY
 
 /*! Initiate a system reboot.
diff --git a/Source/Port/Reference-Impl/mbedOS/RTOS/pal_plat_rtos.c b/Source/Port/Reference-Impl/mbedOS/RTOS/pal_plat_rtos.c
index d09e299..93ec404 100644
--- a/Source/Port/Reference-Impl/mbedOS/RTOS/pal_plat_rtos.c
+++ b/Source/Port/Reference-Impl/mbedOS/RTOS/pal_plat_rtos.c
@@ -125,7 +125,7 @@ typedef struct palMessageQ{
 inline static void setDefaultThreadValues(palThread_t* thread)
 {
 #if PAL_UNIQUE_THREAD_PRIORITY      
-    g_palThreadPriorities[thread->osThread.tpriority+PRIORYT_INDEX_OFFSET] = false;
+    g_palThreadPriorities[thread->osThread.tpriority+PRIORITY_INDEX_OFFSET] = false;
 #endif //PAL_UNIQUE_THREAD_PRIORITY     
     thread->threadStore = NULL;
     thread->threadFuncWrapper.realThreadArgs = NULL;
@@ -293,7 +293,7 @@ palStatus_t pal_plat_osThreadCreate(palThreadFuncPtr function, void* funcArgumen
         g_palThreads[firstAvailableThreadIndex].osThread.stack_pointer = stackPtr;
         g_palThreads[firstAvailableThreadIndex].initialized = true;
 #if PAL_UNIQUE_THREAD_PRIORITY      
-        g_palThreadPriorities[priority+PRIORYT_INDEX_OFFSET] = true;
+        g_palThreadPriorities[priority+PRIORITY_INDEX_OFFSET] = true;
 #endif //PAL_UNIQUE_THREAD_PRIORITY     
 
         status = PAL_SUCCESS;