diff --git a/portable/MemMang/heap_2.c b/portable/MemMang/heap_2.c
index bdf05c62d..1240a6b53 100644
--- a/portable/MemMang/heap_2.c
+++ b/portable/MemMang/heap_2.c
@@ -125,7 +125,7 @@ void * pvPortMalloc( size_t xWantedSize )
     vTaskSuspendAll();
     {
         /* If this is the first call to malloc then the heap will require
-         *  initialisation to setup the list of free blocks. */
+         * initialisation to setup the list of free blocks. */
         if( xHeapHasBeenInitialised == pdFALSE )
         {
             prvHeapInit();
@@ -133,7 +133,7 @@ void * pvPortMalloc( size_t xWantedSize )
         }
 
         /* The wanted size must be increased so it can contain a BlockLink_t
-         *  structure in addition to the requested amount of bytes. */
+         * structure in addition to the requested amount of bytes. */
         if( xWantedSize > 0 )
         {
             /* Ensure xWantedSize will never wrap after adjustment, even if we need
diff --git a/portable/MemMang/heap_4.c b/portable/MemMang/heap_4.c
index dea300104..8bdedf767 100644
--- a/portable/MemMang/heap_4.c
+++ b/portable/MemMang/heap_4.c
@@ -146,7 +146,7 @@ void * pvPortMalloc( size_t xWantedSize )
                     xWantedSize += xHeapStructSize;
 
                     /* Ensure that blocks are always aligned to the required number
-                    * of bytes. */
+                     * of bytes. */
                     if( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0x00 )
                     {
                         /* Byte alignment required. (check for overflow again) */
@@ -179,7 +179,7 @@ void * pvPortMalloc( size_t xWantedSize )
             if( ( xWantedSize > 0 ) && ( xWantedSize < xFreeBytesRemaining ) )
             {
                 /* Traverse the list from the start	(lowest address) block until
-                 * one	of adequate size is found. */
+                 * one of adequate size is found. */
                 pxPreviousBlock = &xStart;
                 pxBlock = xStart.pxNextFreeBlock;
 
@@ -190,7 +190,7 @@ void * pvPortMalloc( size_t xWantedSize )
                 }
 
                 /* If the end marker was reached then a block of adequate size
-                 * was	not found. */
+                 * was not found. */
                 if( pxBlock != pxEnd )
                 {
                     /* Return the memory space pointed to - jumping over the
diff --git a/portable/MemMang/heap_5.c b/portable/MemMang/heap_5.c
index 848a1516b..4953237f0 100644
--- a/portable/MemMang/heap_5.c
+++ b/portable/MemMang/heap_5.c
@@ -182,7 +182,7 @@ void * pvPortMalloc( size_t xWantedSize )
             if( ( xWantedSize > 0 ) && ( xWantedSize < xFreeBytesRemaining ) )
             {
                 /* Traverse the list from the start	(lowest address) block until
-                 * one	of adequate size is found. */
+                 * one of adequate size is found. */
                 pxPreviousBlock = &xStart;
                 pxBlock = xStart.pxNextFreeBlock;
 
@@ -193,7 +193,7 @@ void * pvPortMalloc( size_t xWantedSize )
                 }
 
                 /* If the end marker was reached then a block of adequate size
-                 * was	not found. */
+                 * was not found. */
                 if( pxBlock != pxEnd )
                 {
                     /* Return the memory space pointed to - jumping over the