diff --git a/arch/renesas/include/sh1Ptypes.h b/arch/renesas/include/sh1Ptypes.h
index aeb288a748..9b130d1f21 100644
--- a/arch/renesas/include/sh1Ptypes.h
+++ b/arch/renesas/include/sh1Ptypes.h
@@ -76,11 +76,6 @@ typedef signed long long   _int64_t;
 typedef unsigned long long _uint64_t;
 #define __INT64_DEFINED
 
-/* A pointer is 4 bytes */
-
-typedef signed int         _intptr_t;
-typedef unsigned int       _uintptr_t;
-
 /* This is the size of the interrupt state save returned by
  * up_irq_save()
  */
diff --git a/arch/x86_64/include/intel64/types.h b/arch/x86_64/include/intel64/types.h
index aca6a76ad1..6a52fe0da9 100644
--- a/arch/x86_64/include/intel64/types.h
+++ b/arch/x86_64/include/intel64/types.h
@@ -65,11 +65,6 @@ typedef unsigned long      _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
-/* A pointer is 8 bytes */
-
-typedef signed long long         _intptr_t;
-typedef unsigned long long       _uintptr_t;
-
 #if defined(__SIZE_TYPE__)
 /* If __SIZE_TYPE__ is defined we define ssize_t based on size_t.
  * We simply change "unsigned" to "signed" for this single definition