diff --git a/arch/nt32/bits/limits.h b/arch/nt32/bits/limits.h
index 860b148..497ecc1 100644
--- a/arch/nt32/bits/limits.h
+++ b/arch/nt32/bits/limits.h
@@ -1,8 +1,5 @@
-#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
- || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define PAGE_SIZE	65536
 #define LONG_BIT	32
-#endif
 
 #define LONG_MAX  0x7fffffffL
 #define LLONG_MAX  0x7fffffffffffffffLL
diff --git a/arch/nt64/bits/limits.h b/arch/nt64/bits/limits.h
index bdd0f14..b17372b 100644
--- a/arch/nt64/bits/limits.h
+++ b/arch/nt64/bits/limits.h
@@ -1,8 +1,5 @@
-#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
- || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define PAGE_SIZE	65536
 #define LONG_BIT	64
-#endif
 
 #define LONG_MAX  0x7fffffffffffffffL
 #define LLONG_MAX  0x7fffffffffffffffLL