diff --git a/nanomodbus.c b/nanomodbus.c
index a098c0c..607f8b2 100644
--- a/nanomodbus.c
+++ b/nanomodbus.c
@@ -193,7 +193,7 @@ static uint16_t crc_calc(const uint8_t* data, uint32_t length) {
         }
     }
 
-    return crc;
+    return (uint16_t) (crc << 8) | (uint16_t) (crc >> 8);
 }