diff --git a/docs/ref/migration-operations.txt b/docs/ref/migration-operations.txt
index de7c6cc..c3892fb 100644
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RemoveField
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| 163 | 163 | |
| 164 | 164 | Removes a field from a model. |
| 165 | 165 | |
| 166 | | Bear in mind that when reversed this is actually adding a field to a model; |
| 167 | | if the field is not nullable this may make this operation irreversible (apart |
| 168 | | from any data loss, which of course is irreversible). |
| | 166 | Bear in mind that when reversed this is actually adding a field to a model. To make this possible, Django needs a default value to populate the recreated empty column. This is only possible for a field that is nullable or has a defined default value. |
| | 167 | On the other hand if the field is not nullable and does not have a default value, this operation is irreversible (apart from any data loss, which of course is irreversible). |
| 169 | 168 | |
| 170 | 169 | AlterField |
| 171 | 170 | ---------- |