diff --git a/nnedi3/PlanarFrame.h b/nnedi3/PlanarFrame.h
index 2f00928..8a8bb06 100644
--- a/nnedi3/PlanarFrame.h
+++ b/nnedi3/PlanarFrame.h
@@ -90,11 +90,11 @@ class PlanarFrame
 	int GetPitch(uint8_t plane);
 	int getCPUFlags(void) {return cpu;}
 	inline void BitBlt(uint8_t *dstp,int dst_pitch,const uint8_t *srcp,int src_pitch,int row_size,int height);
-	PlanarFrame& PlanarFrame::operator=(PlanarFrame &ob2);
+	PlanarFrame& operator=(PlanarFrame &ob2);
 	void convYUY2to422(const uint8_t *src,uint8_t *py,uint8_t *pu,uint8_t *pv,int pitch1,int pitch2Y,int pitch2UV,
 		int width,int height);
 	void convRGB24to444(const uint8_t *src,uint8_t *py,uint8_t *pu,uint8_t *pv,int pitch1,int pitch2Y,int pitch2UV,
 		int width,int height);
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/nnedi3/ThreadPool.h b/nnedi3/ThreadPool.h
index e8cc7cd..b0abd56 100644
--- a/nnedi3/ThreadPool.h
+++ b/nnedi3/ThreadPool.h
@@ -23,7 +23,7 @@
 #ifndef __ThreadPool_H__
 #define __ThreadPool_H__
 
-#include <Windows.h>
+#include <windows.h>
 
 #include "./ThreadPoolDef.h"
 
diff --git a/nnedi3/ThreadPoolInterface.h b/nnedi3/ThreadPoolInterface.h
index 006a33c..8ee0a2b 100644
--- a/nnedi3/ThreadPoolInterface.h
+++ b/nnedi3/ThreadPoolInterface.h
@@ -23,7 +23,7 @@
 #ifndef __ThreadPoolInterface_H__
 #define __ThreadPoolInterface_H__
 
-#include <Windows.h>
+#include <windows.h>
 #include <vector>
 
 #include "./ThreadPoolDef.h"
diff --git a/nnedi3/internal.h b/nnedi3/internal.h
index e2b93e5..9aa9ba2 100644
--- a/nnedi3/internal.h
+++ b/nnedi3/internal.h
@@ -37,7 +37,7 @@
 #define __Internal_H__
 
 #define AVS_VERSION 2.56
-#define AVS_VERSTR "AviSynth 2.56, build:"__DATE__" ["__TIME__"]"
+#define AVS_VERSTR "AviSynth 2.56, build:\"__DATE__\" [\"__TIME__\"]"
 
 
 // env->ManageCache() Non user keys definition
@@ -47,7 +47,7 @@
 
 
 #include "./avisynth.h"
-
+#include <cstring>
 
 
 int RGB2YUV(int rgb);
diff --git a/nnedi3/nnedi3.cpp b/nnedi3/nnedi3.cpp
index f85fb4f..0b75dda 100644
--- a/nnedi3/nnedi3.cpp
+++ b/nnedi3/nnedi3.cpp
@@ -20,7 +20,7 @@
 **   Modified by JPSDR
 */
 
-#include "./nnedi3.h"
+#include "nnedi3.h"
 
 #if _MSC_VER >= 1900
 #define AVX2_BUILD_POSSIBLE
@@ -427,7 +427,7 @@ nnedi3::nnedi3(PClip _child,int _field,bool _dh,bool _Y,bool _U,bool _V,bool _A,
 #endif
 
 		char buf[512];
-		sprintf_s(buf,512,"nnedi3: auto-detected opt setting = %d (%d)\n",opt,CPUF);
+		snprintf(buf,512,"nnedi3: auto-detected opt setting = %d (%d)\n",opt,CPUF);
 		OutputDebugString(buf);
 	}
 
@@ -554,7 +554,7 @@ nnedi3::nnedi3(PClip _child,int _field,bool _dh,bool _Y,bool _U,bool _V,bool _A,
 		}
 
 		// 16 bit pixels will be shifted by 1 for the prescreener.
-		const int prescreener_bits = min(bits_per_pixel,15);
+		const int prescreener_bits = min((int)bits_per_pixel,15);
 		const double half = (((int)1 << prescreener_bits)-1)/2.0;
 
 		// Factor mean removal and 1.0/half scaling
@@ -598,7 +598,7 @@ nnedi3::nnedi3(PClip _child,int _field,bool _dh,bool _Y,bool _U,bool _V,bool _A,
 			float *wf = (float *)&ws[4*48];
 
 			// 16 bit pixels will be shifted by 1 for the prescreener.
-			const int prescreener_bits = min(bits_per_pixel,15);
+			const int prescreener_bits = min((int)bits_per_pixel,15);
 			const double half = (((int)1 << prescreener_bits)-1)/2.0;
 
 			// Factor mean removal and 1.0/half scaling
@@ -4708,8 +4708,13 @@ AVSValue __cdecl Create_nnedi3_rpow2(AVSValue args, void* user_data, IScriptEnvi
 
 const AVS_Linkage *AVS_linkage = nullptr;
 
+#ifdef _MSC_VER
+#define EXPORT extern "C" __declspec(dllexport)
+#else
+#define EXPORT extern "C" __stdcall
+#endif
 
-extern "C" __declspec(dllexport) const char* __stdcall AvisynthPluginInit3(IScriptEnvironment* env, const AVS_Linkage* const vectors)
+EXPORT const char* AvisynthPluginInit3(IScriptEnvironment* env, const AVS_Linkage* const vectors)
 {
 	AVS_linkage = vectors;
 
diff --git a/nnedi3/nnedi3.h b/nnedi3/nnedi3.h
index 22f9bff..b968e97 100644
--- a/nnedi3/nnedi3.h
+++ b/nnedi3/nnedi3.h
@@ -27,6 +27,19 @@
 #include "./avisynth.h"
 #include "./PlanarFrame.h"
 #include "./ThreadPoolInterface.h"
+#ifndef _MSC_VER
+#define _strnicmp strncasecmp
+#endif
+
+#include <stdlib.h>
+
+using namespace std;
+ 
+#ifndef _MSC_VER
+#define _aligned_malloc(size, alignment) aligned_alloc(size, alignment)
+// Note: This is safe on Unix. see `man 3 aligned_alloc`
+#define _aligned_free(m) free(m)
+#endif
 
 #define NUM_NSIZE 7
 #define NUM_NNS 5
@@ -99,7 +112,7 @@ class nnedi3 : public GenericVideoFilter
 	nnedi3(PClip _child,int _field,bool _dh,bool _Y,bool _U,bool _V,bool _A,int _nsize,int _nns,int _qual,int _etype,
 		int _pscrn,uint8_t _threads,int _opt,int _fapprox,bool _sleep,int range_mode, bool negativePrefetch,bool _asvp,IScriptEnvironment *env);
 	virtual ~nnedi3();
-	PVideoFrame __stdcall nnedi3::GetFrame(int n,IScriptEnvironment *env);
+	PVideoFrame __stdcall GetFrame(int n,IScriptEnvironment *env);
 
 	int __stdcall SetCacheHints(int cachehints, int frame_range);
 };