diff --git a/myst_parser/warnings_.py b/myst_parser/warnings_.py
index e23b122d..0dfe6358 100644
--- a/myst_parser/warnings_.py
+++ b/myst_parser/warnings_.py
@@ -27,7 +27,7 @@ class MystWarnings(Enum):
     """Duplicate Markdown footnote definition."""
     MD_FOOTNOTE_MISSING = "footnote"  # noqa: PIE796
     """Missing Markdown footnote definition."""
-    MD_FOOTNOTE_UNUSED = "footnote"  # noqa: PIE796
+    MD_FOOTNOTE_UNUSED = "footnote_unused"
     """Unused Markdown footnote definition."""
     MD_HEADING_NON_CONSECUTIVE = "header"
     """Non-consecutive heading levels."""
diff --git a/tests/test_renderers/fixtures/reporter_warnings.md b/tests/test_renderers/fixtures/reporter_warnings.md
index 2c1dd5a7..fbbcf254 100644
--- a/tests/test_renderers/fixtures/reporter_warnings.md
+++ b/tests/test_renderers/fixtures/reporter_warnings.md
@@ -121,7 +121,7 @@ footnote definition with no reference
 .
 [^a]: definition
 .
-<string>:1: (WARNING/2) Footnote definition not referenced: 'a' [myst.footnote]
+<string>:1: (WARNING/2) Footnote definition not referenced: 'a' [myst.footnote_unused]
 .
 
 duplicate footnote definition