diff --git a/reactos/base/shell/explorer/utility/xmlstorage.h b/reactos/base/shell/explorer/utility/xmlstorage.h
index 0d224c9e3aa..97516d88323 100644
--- a/reactos/base/shell/explorer/utility/xmlstorage.h
+++ b/reactos/base/shell/explorer/utility/xmlstorage.h
@@ -714,7 +714,7 @@ struct XMLNode : public XS_String
 			return super::find(x);
 		}
 
-		XS_String get(const char* x, LPXSSTR def=XS_EMPTY_STR) const
+		XS_String get(const char* x, LPCXSSTR def=XS_EMPTY_STR) const
 		{
 			const_iterator found = find(x);
 
@@ -728,7 +728,7 @@ struct XMLNode : public XS_String
 	 /// map of XML node attributes
 	struct AttributeMap : public std::map<XS_String, XS_String>
 	{
-		XS_String get(const char* x, LPXSSTR def=XS_EMPTY_STR) const
+		XS_String get(const char* x, LPCXSSTR def=XS_EMPTY_STR) const
 		{
 			const_iterator found = find(x);
 
@@ -848,7 +848,7 @@ struct XMLNode : public XS_String
 	}
 
 	 /// read only access to an attribute
-	template<typename T> XS_String get(const T& attr_name, LPXSSTR def=XS_EMPTY_STR) const
+	template<typename T> XS_String get(const T& attr_name, LPCXSSTR def=XS_EMPTY_STR) const
 	{
 		AttributeMap::const_iterator found = _attributes.find(attr_name);
 
diff --git a/reactos/tools/pefixup.c b/reactos/tools/pefixup.c
index 9e0c125156a..e46b422803d 100644
--- a/reactos/tools/pefixup.c
+++ b/reactos/tools/pefixup.c
@@ -24,6 +24,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
 
 #ifndef O_BINARY
 #define O_BINARY 0