diff --git a/read/read.go b/read/read.go
index f1e81cc..336c4d2 100644
--- a/read/read.go
+++ b/read/read.go
@@ -157,12 +157,16 @@ func (buf *Buffer) fill(minBytes int) {
 	}
 	buf.grow(minBytes)
 
-	n, err := buf.bufio.Read(buf.buffer[bufLen:cap(buf.buffer)])
-	buf.buffer = buf.buffer[:bufLen+n]
+	for bufLen < minBytes {
+		n, err := buf.bufio.Read(buf.buffer[bufLen:cap(buf.buffer)])
+		bufLen += n
+		buf.buffer = buf.buffer[:bufLen]
 
-	if err != nil {
-		buf.err = err
-		buf.errOffset = bufLen + n
+		if err != nil {
+			buf.err = err
+			buf.errOffset = bufLen
+			break
+		}
 	}
 }