diff --git a/fitparser/header.go b/fitparser/header.go
index 3cf4fb7..f2824a7 100644
--- a/fitparser/header.go
+++ b/fitparser/header.go
@@ -54,10 +54,12 @@ func ParseHeader(data []byte) (*Header, error) {
 	if h.Size == HeaderWithCRCSize {
 		h.CRC = binary.LittleEndian.Uint16(data[12:14])
 
-		// Validate header CRC
-		calculatedCRC := CalculateCRC(data[0:12])
-		if calculatedCRC != h.CRC {
-			return nil, fmt.Errorf("header CRC mismatch: got 0x%04X, expected 0x%04X", h.CRC, calculatedCRC)
+		// Validate header CRC (skip if CRC is 0x0000, which means "no validation")
+		if h.CRC != 0x0000 {
+			calculatedCRC := CalculateCRC(data[0:12])
+			if calculatedCRC != h.CRC {
+				return nil, fmt.Errorf("header CRC mismatch: got 0x%04X, expected 0x%04X", h.CRC, calculatedCRC)
+			}
 		}
 	}