diff --git a/c/c.go b/c/c.go
index e9ba88d5..571f6e06 100644
--- a/c/c.go
+++ b/c/c.go
@@ -33,9 +33,13 @@ type (
 	Float   = float32
 	Double  = float64
 	Pointer = unsafe.Pointer
-	FilePtr = unsafe.Pointer
+	FilePtr = *FILE
 )
 
+type FILE struct {
+	Unused [8]byte
+}
+
 type (
 	Int  C.int
 	Uint C.uint