diff --git a/core/io/util.odin b/core/io/util.odin
index c1d8d2808..c6ad8f525 100644
--- a/core/io/util.odin
+++ b/core/io/util.odin
@@ -8,7 +8,7 @@ read_ptr :: proc(r: Reader, p: rawptr, byte_size: int, n_read: ^int = nil) -> (n
 	return read(r, ([^]byte)(p)[:byte_size], n_read)
 }
 
-read_slice :: proc(r: Reader, p: rawptr, byte_size: int, n_read: ^int = nil) -> (n: int, err: Error) {
+read_slice :: proc(r: Reader, slice: $S/[]$T, n_read: ^int = nil) -> (n: int, err: Error) {
 	size := len(slice)*size_of(T)
 	return read_ptr(w, raw_data(slice), size, n_read)
 }
diff --git a/core/os/file_util.odin b/core/os/file_util.odin
index 235362e04..854977b01 100644
--- a/core/os/file_util.odin
+++ b/core/os/file_util.odin
@@ -114,19 +114,19 @@ read_ptr :: proc(f: ^File, data: rawptr, len: int) -> (n: int, err: Error) {
 /*
 	`write_slice` is a utility procedure that writes the bytes points at `slice`.
 
-	It is equivalent to: `write(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0]))])`
+	It is equivalent to: `write(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0])])`
 */
 write_slice :: proc(f: ^File, slice: $S/[]$T) -> (n: int, err: Error) {
-	return write(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0]))])
+	return write(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0])])
 }
 
 /*
 	`read_slice` is a utility procedure that writes the bytes points at `slice`.
 
-	It is equivalent to: `read(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0]))])`
+	It is equivalent to: `read(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0])])`
 */
 read_slice :: proc(f: ^File, slice: $S/[]$T) -> (n: int, err: Error) {
-	return read(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0]))])
+	return read(f, ([^]byte)(raw_data(slice))[:len(slice)*size_of(slice[0])])
 }