diff --git a/data-access/servlet/src/main/java/common/FitsCard.java b/data-access/servlet/src/main/java/common/FitsCard.java
index 3987e99fa27bf883aca48f911be290bccb3d347f..0e7afda53b4d1edc1b7b46278a3f68c80b3cfa16 100644
--- a/data-access/servlet/src/main/java/common/FitsCard.java
+++ b/data-access/servlet/src/main/java/common/FitsCard.java
@@ -34,11 +34,11 @@ class FitsCard
    {
       if(csv_vel_unit.equals("m.s**-1"))
       {
-         return new String("m/s");
+         return new String("'m/s'");
       }
       else if(csv_vel_unit.equals("km.s**-1"))
       {
-         return new String("km/s");
+         return new String("'km/s'");
       }
       else
       {