diff --git a/Zend/zend_portability.h b/Zend/zend_portability.h
index 5be8d7e4f5ced..f4609428326c7 100644
--- a/Zend/zend_portability.h
+++ b/Zend/zend_portability.h
@@ -444,14 +444,6 @@ char *alloca();
 # define ZTS_V 0
 #endif
 
-#ifndef LONG_MAX
-# define LONG_MAX 2147483647L
-#endif
-
-#ifndef LONG_MIN
-# define LONG_MIN (- LONG_MAX - 1)
-#endif
-
 #define MAX_LENGTH_OF_DOUBLE 32
 
 #undef MIN
diff --git a/Zend/zend_strtod.c b/Zend/zend_strtod.c
index 6a358bb1128eb..b2995197c9aa4 100644
--- a/Zend/zend_strtod.c
+++ b/Zend/zend_strtod.c
@@ -292,10 +292,6 @@ static double private_mem[PRIVATE_mem], *pmem_next = private_mem;
 #define DBL_MAX 1.7014118346046923e+38
 #endif
 
-#ifndef LONG_MAX
-#define LONG_MAX 2147483647
-#endif
-
 #else /* ifndef Bad_float_h */
 #include "float.h"
 #endif /* Bad_float_h */
diff --git a/ext/bcmath/libbcmath/src/bcmath.h b/ext/bcmath/libbcmath/src/bcmath.h
index 07dd84ff90d11..5b4160bf4002a 100644
--- a/ext/bcmath/libbcmath/src/bcmath.h
+++ b/ext/bcmath/libbcmath/src/bcmath.h
@@ -74,11 +74,6 @@ typedef struct bc_struct {
 #define MAX(a, b)      ((a)>(b)?(a):(b))
 #define MIN(a, b)      ((a)>(b)?(b):(a))
 
-#ifndef LONG_MAX
-#define LONG_MAX 0x7fffffff
-#endif
-
-
 /* Function Prototypes */
 
 void bc_init_numbers(void);
diff --git a/main/php.h b/main/php.h
index 2ab4c39de5bf7..276360d0f96bf 100644
--- a/main/php.h
+++ b/main/php.h
@@ -225,14 +225,6 @@ typedef unsigned int socklen_t;
 
 #include <limits.h>
 
-#ifndef LONG_MAX
-#define LONG_MAX 2147483647L
-#endif
-
-#ifndef LONG_MIN
-#define LONG_MIN (- LONG_MAX - 1)
-#endif
-
 #ifndef INT_MAX
 #define INT_MAX 2147483647
 #endif