--- a/toolkit/mozapps/extensions/AbuseReporter.jsm
+++ b/toolkit/mozapps/extensions/AbuseReporter.jsm
@@ -248,22 +248,27 @@ const AbuseReporter = {
         return value;
       }
       return value && (value[locale] || value["en-US"]);
     };
 
     const getAuthorField = fieldName =>
       details.authors && details.authors[0] && details.authors[0][fieldName];
 
+    // Normalize type "statictheme" (which is the type used on the AMO API side)
+    // into "theme" (because it is the type we use and expect on the Firefox side
+    // for this addon type).
+    const addonType = details.type === "statictheme" ? "theme" : details.type;
+
     return {
       id: addonId,
       name: getTranslatedValue(details.name),
       version: details.current_version.version,
       description: getTranslatedValue(details.summary),
-      type: details.type,
+      type: addonType,
       iconURL: details.icon_url,
       homepageURL: getTranslatedValue(details.homepage),
       supportURL: getTranslatedValue(details.support_url),
       // Set the addon creator to the first author in the AMO details.
       creator: {
         name: getAuthorField("name"),
         url: getAuthorField("url"),
       },

--- a/toolkit/mozapps/extensions/test/xpcshell/test_AbuseReporter.js
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_AbuseReporter.js
@@ -858,8 +858,23 @@ add_task(async function test_query_amo_d
     addon_name: FAKE_AMO_DETAILS.name["en-US"],
   };
   await assertReportOnAMODetails({ addonId, expectedReport });
 
   Services.prefs.clearUserPref(PREF_REQUIRED_LOCALE);
 
   amoAddonDetailsMap.clear();
 });
+
+add_task(async function test_statictheme_normalized_into_type_theme() {
+  const themeId = "not-installed-statictheme@mochi.test";
+  amoAddonDetailsMap.set(themeId, {
+    ...FAKE_AMO_DETAILS,
+    type: "statictheme",
+  });
+
+  const report = await AbuseReporter.createAbuseReport(themeId, REPORT_OPTIONS);
+
+  equal(report.addon.id, themeId, "Got a report for the expected theme id");
+  equal(report.addon.type, "theme", "Got the expected addon type");
+
+  amoAddonDetailsMap.clear();
+});