diff --git a/devtools/client/debugger/src/components/Editor/menus/editor.js b/devtools/client/debugger/src/components/Editor/menus/editor.js
index c8910257484b7..5ed3c96f6f990 100644
--- a/devtools/client/debugger/src/components/Editor/menus/editor.js
+++ b/devtools/client/debugger/src/components/Editor/menus/editor.js
@@ -131,15 +131,17 @@ export const blackBoxLineMenuItem = (
     ? blackboxRange.start.line == blackboxRange.end.line
     : startLine == endLine;
 
+  const isSourceFullyBlackboxed =
+    blackboxedRanges[selectedSource.url] &&
+    !blackboxedRanges[selectedSource.url].length;
+
   // The ignore/unignore line context menu item should be disabled when
   // 1) The source is on the sourcemap ignore list
   // 2) The whole source is blackboxed or
   // 3) Multiple lines are blackboxed or
   // 4) Multiple lines are selected in the editor
   const shouldDisable =
-    isSourceOnIgnoreList ||
-    !blackboxedRanges[selectedSource.url]?.length ||
-    !isSingleLine;
+    isSourceOnIgnoreList || isSourceFullyBlackboxed || !isSingleLine;
 
   return {
     id: "node-menu-blackbox-line",
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-blackbox.js b/devtools/client/debugger/test/mochitest/browser_dbg-blackbox.js
index af48aa2a31750..9542473408f29 100644
--- a/devtools/client/debugger/test/mochitest/browser_dbg-blackbox.js
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-blackbox.js
@@ -490,6 +490,17 @@ async function resumeAndWaitForPauseCounter(dbg) {
   );
 }
 
+async function assertContextMenuDisabled(dbg, selector, shouldBeDisabled) {
+  const item = await waitFor(() => findContextMenu(dbg, selector));
+  is(
+    item.disabled,
+    shouldBeDisabled,
+    `The the context menu item is ${
+      shouldBeDisabled ? "disabled" : "not disabled"
+    }`
+  );
+}
+
 /**
  * Asserts that the gutter blackbox context menu items which are visible are correct
  * @params {Object} dbg
@@ -517,6 +528,11 @@ async function assertGutterBlackBoxBoxContextMenuItems(dbg, testFixtures) {
         : contextMenuItems.unignoreLine;
 
     await assertContextMenuLabel(dbg, item.selector, item.label);
+    await assertContextMenuDisabled(
+      dbg,
+      item.selector,
+      blackboxedSourceState == SOURCE_IS_FULLY_IGNORED
+    );
     await closeContextMenu(dbg, popup);
   }
 
@@ -531,7 +547,7 @@ async function assertGutterBlackBoxBoxContextMenuItems(dbg, testFixtures) {
     );
     const item = contextMenuItems.ignoreLine;
     await assertContextMenuLabel(dbg, item.selector, item.label);
-
+    await assertContextMenuDisabled(dbg, item.selector, false);
     await closeContextMenu(dbg, popup);
   }
 }