diff --git a/TinyEXIF.cpp b/TinyEXIF.cpp
index 2fadd6a..b4370b6 100644
--- a/TinyEXIF.cpp
+++ b/TinyEXIF.cpp
@@ -95,6 +95,9 @@ namespace Tools {
 
 namespace TinyEXIF {
 
+uint32_t const _ONE32 = 1;
+bool const IS_LITTLE_ENDIAN = (reinterpret_cast<uint8_t const*>(&_ONE32))[0] == 1;
+
 enum JPEG_MARKERS {
 	JM_START = 0xFF,
 	JM_SOF0  = 0xC0,
@@ -945,10 +948,10 @@ int EXIFInfo::parseFromEXIFSegment(const uint8_t* buf, unsigned len) {
 		return PARSE_CORRUPT_DATA;
 	bool alignIntel;
 	if (buf[offs] == 'I' && buf[offs+1] == 'I')
-		alignIntel = true; // 1: Intel byte alignment
+		alignIntel = IS_LITTLE_ENDIAN; // 1: Intel byte alignment
 	else
 	if (buf[offs] == 'M' && buf[offs+1] == 'M')
-		alignIntel = false; // 0: Motorola byte alignment
+		alignIntel = !IS_LITTLE_ENDIAN; // 0: Motorola byte alignment
 	else
 		return PARSE_UNKNOWN_BYTEALIGN;
 	EntryParser parser(buf, len, offs, alignIntel);