diff --git a/src/HMT_Parser.c b/src/HMT_Parser.c
index 3163112..c9f629b 100644
--- a/src/HMT_Parser.c
+++ b/src/HMT_Parser.c
@@ -130,10 +130,18 @@ int getSamplesFromFile(RS_IMAGE *img, FILE *f) {
 	int sample_bits = img->sampleBits;
 	int size = div(img->width*img->height*sample_bits, 8).quot;
 
-	if (f->_bufsiz >= ftell(f)+size) {							//TODO: Check C equivalent
-		printf("[ERR] WARNING! Please fix size/sample.");
-		return EXIT_FAILURE;
-	}
+	#ifdef _WIN32
+		if (f->_bufsiz >= ftell(f)+size) {
+			printf("[ERR] WARNING! Please fix size/sample.");
+			return EXIT_FAILURE;
+		}
+	#else
+		if (__fbufsize(f) >= ftell(f)+size) {
+			printf("[ERR] WARNING! Please fix size/sample.");
+			return EXIT_FAILURE;
+		}
+	#endif
+
 
 	img->samples = calloc(1, size);
 	fread(img->samples, size, 1, f);
diff --git a/src/HMT_Parser.h b/src/HMT_Parser.h
index 50dbd38..020b1e6 100644
--- a/src/HMT_Parser.h
+++ b/src/HMT_Parser.h
@@ -2,6 +2,9 @@
 #define HMT_PARSER_H_
 
 #include <stdio.h>
+#ifndef _WIN32
+	#include <stdio_ext.h>
+#endif
 #include <stdlib.h>
 #include "options.h"
 #include "RS_images.h"