diff --git a/types.go b/types.go
index ac99e92e..2ba8bba5 100644
--- a/types.go
+++ b/types.go
@@ -334,7 +334,7 @@ func readFixedType(ti *typeInfo, r *tdsBuffer, c *cryptoMetadata) interface{} {
 	case typeDateTim4:
 		return decodeDateTim4(buf)
 	case typeFlt4:
-		return math.Float32frombits(binary.LittleEndian.Uint32(buf))
+		return float64(math.Float32frombits(binary.LittleEndian.Uint32(buf)))
 	case typeMoney4:
 		return decodeMoney4(buf)
 	case typeMoney: