diff --git a/main/main.c b/main/main.c
index 2a3a1628263..0e5e9dcd372 100644
--- a/main/main.c
+++ b/main/main.c
@@ -1577,8 +1577,6 @@ int php_module_startup(sapi_module_struct *sf, zend_module_entry *additional_mod
 	REGISTER_MAIN_STRINGL_CONSTANT("PHP_OS", php_os, strlen(php_os), CONST_PERSISTENT | CONST_CS);
 	REGISTER_MAIN_STRINGL_CONSTANT("PHP_SAPI", sapi_module.name, strlen(sapi_module.name), CONST_PERSISTENT | CONST_CS);
 	REGISTER_MAIN_STRINGL_CONSTANT("DEFAULT_INCLUDE_PATH", PHP_INCLUDE_PATH, sizeof(PHP_INCLUDE_PATH)-1, CONST_PERSISTENT | CONST_CS);
-	REGISTER_MAIN_STRINGL_CONSTANT("PEAR_INSTALL_DIR", PEAR_INSTALLDIR, sizeof(PEAR_INSTALLDIR)-1, CONST_PERSISTENT | CONST_CS);
-	REGISTER_MAIN_STRINGL_CONSTANT("PEAR_EXTENSION_DIR", PHP_EXTENSION_DIR, sizeof(PHP_EXTENSION_DIR)-1, CONST_PERSISTENT | CONST_CS);
 	REGISTER_MAIN_STRINGL_CONSTANT("PHP_EXTENSION_DIR", PHP_EXTENSION_DIR, sizeof(PHP_EXTENSION_DIR)-1, CONST_PERSISTENT | CONST_CS);
 	REGISTER_MAIN_STRINGL_CONSTANT("PHP_PREFIX", PHP_PREFIX, sizeof(PHP_PREFIX)-1, CONST_PERSISTENT | CONST_CS);
 	REGISTER_MAIN_STRINGL_CONSTANT("PHP_BINDIR", PHP_BINDIR, sizeof(PHP_BINDIR)-1, CONST_PERSISTENT | CONST_CS);