diff --git a/ogr.go b/ogr.go
index 8b5c5a9..519ee63 100644
--- a/ogr.go
+++ b/ogr.go
@@ -1275,7 +1275,7 @@ func (feature Feature) SetFieldBinary(index int, value []uint8) {
 		feature.cval,
 		C.int(index),
 		C.int(len(value)),
-		(*C.GByte)(unsafe.Pointer(&value[0])),
+		unsafe.Pointer(&value[0]),
 	)
 }