diff --git a/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/PlatformDdl.java b/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/PlatformDdl.java
index 512d6efc2..ec0a1f335 100644
--- a/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/PlatformDdl.java
+++ b/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/PlatformDdl.java
@@ -513,7 +513,7 @@ public class PlatformDdl {
    * Alter column setting the default value.
    */
   public String alterColumnDefaultValue(String tableName, String columnName, String defaultValue) {
-    String suffix = DdlHelp.isDropDefault(defaultValue) ? columnDropDefault : columnSetDefault + " " + defaultValue;
+    String suffix = DdlHelp.isDropDefault(defaultValue) ? columnDropDefault : columnSetDefault + " " + convertDefaultValue(defaultValue);
     return "alter table " + tableName + " " + alterColumn + " " + columnName + " " + suffix;
   }
 
diff --git a/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/SqlServerDdl.java b/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/SqlServerDdl.java
index 6b094f9d9..39aa5d7c9 100644
--- a/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/SqlServerDdl.java
+++ b/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/SqlServerDdl.java
@@ -145,7 +145,7 @@ public class SqlServerDdl extends PlatformDdl {
       sb.append("if @Tmp is not null EXEC('alter table ").append(tableName).append(" drop constraint ' + @Tmp)$$");
     } else {
       sb.append("alter table ").append(tableName);
-      sb.append(" add default ").append(defaultValue).append(" for ").append(columnName);
+      sb.append(" add default ").append(convertDefaultValue(defaultValue)).append(" for ").append(columnName);
     }
     return sb.toString();
   }