diff --git a/float8.go b/float8.go
index 4d9e7116..6297ab5e 100644
--- a/float8.go
+++ b/float8.go
@@ -204,7 +204,7 @@ func (dst *Float8) DecodeBinary(ci *ConnInfo, src []byte) error {
 	}
 
 	if len(src) != 8 {
-		return fmt.Errorf("invalid length for float4: %v", len(src))
+		return fmt.Errorf("invalid length for float8: %v", len(src))
 	}
 
 	n := int64(binary.BigEndian.Uint64(src))