diff --git a/tools/sdk/ksdk1.1.0/platform/utilities/src/fsl_misc_utilities.c b/tools/sdk/ksdk1.1.0/platform/utilities/src/fsl_misc_utilities.c
index 6dd6f209b..ef197f9fc 100755
--- a/tools/sdk/ksdk1.1.0/platform/utilities/src/fsl_misc_utilities.c
+++ b/tools/sdk/ksdk1.1.0/platform/utilities/src/fsl_misc_utilities.c
@@ -68,7 +68,7 @@ int _isatty (int fd)
 #endif
 
 #if (defined(__GNUC__) && (!defined(KDS)) && (!defined(ATOLLIC)))
-caddr_t
+void *
 _sbrk (int incr)
 {
   extern char   end asm ("end");
@@ -84,12 +84,12 @@ _sbrk (int incr)
   if (heap_end + incr > &heap_limit)
     {
       errno = ENOMEM;
-      return (caddr_t) -1;
+      return (void *) -1;
     }
 
   heap_end += incr;
 
-  return (caddr_t) prev_heap_end;
+  return (void *) prev_heap_end;
 }
 #endif
 
diff --git a/tools/sdk/ksdk1.1.0/platform/utilities/src/syscalls.c b/tools/sdk/ksdk1.1.0/platform/utilities/src/syscalls.c
index 488a721d3..b9db05064 100755
--- a/tools/sdk/ksdk1.1.0/platform/utilities/src/syscalls.c
+++ b/tools/sdk/ksdk1.1.0/platform/utilities/src/syscalls.c
@@ -77,7 +77,7 @@ int _write(int32_t file, uint8_t *ptr, int32_t len)
     return len;
 }
 
-caddr_t _sbrk(int32_t incr)
+void * _sbrk(int32_t incr)
 {
     extern uint8_t end asm("end");
     static uint8_t *heap_end;
@@ -93,12 +93,12 @@ caddr_t _sbrk(int32_t incr)
 //      write(1, "Heap and stack collision\n", 25);
 //      abort();
         errno = ENOMEM;
-        return (caddr_t) -1;
+        return (void *) -1;
     }
 
     heap_end += incr;
 
-    return (caddr_t) prev_heap_end;
+    return (void *) prev_heap_end;
 }
 
 int _close(int32_t file)