diff --git a/fipstest.cpp b/fipstest.cpp
index 01ab761b..3298a400 100644
--- a/fipstest.cpp
+++ b/fipstest.cpp
@@ -279,7 +279,7 @@ bool IntegrityCheckModule(const char *moduleFilename, const byte *expectedModule
 	char moduleFilenameBuf[MAX_PATH] = "";
 	if (moduleFilename == NULL)
 	{
-#if (defined(_MSC_VER) && _MSC_VER >= 1400)	// ifstream doesn't support wide filename on other compilers
+#if (_MSC_VER >= 1400 && !defined(_STLPORT_VERSION))	// ifstream doesn't support wide filename on other compilers
 		wchar_t wideModuleFilename[MAX_PATH];
 		if (GetModuleFileNameW(s_hModule, wideModuleFilename, MAX_PATH) > 0)
 		{
diff --git a/zdeflate.cpp b/zdeflate.cpp
index ae5e1a76..b08f357a 100644
--- a/zdeflate.cpp
+++ b/zdeflate.cpp
@@ -385,7 +385,7 @@ unsigned int Deflator::LongestMatch(unsigned int &bestMatch) const
 		{
 			assert(scan[2] == match[2]);
 			unsigned int len = (unsigned int)(
-#if defined(_STDEXT_BEGIN) && !(defined(_MSC_VER) && _MSC_VER < 1400)
+#if defined(_STDEXT_BEGIN) && !(defined(_MSC_VER) && _MSC_VER < 1400) && !defined(_STLPORT_VERSION)
 				stdext::unchecked_mismatch
 #else
 				std::mismatch