diff --git a/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.json.in b/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.json.in
index 6ec7e5ab042..ee13229fa3a 100644
--- a/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.json.in
+++ b/src/plugins/autotoolsprojectmanager/AutotoolsProjectManager.json.in
@@ -24,5 +24,29 @@
     ],
     "Url" : "https://www.qt.io",
     "DocumentationUrl" : "https://doc.qt.io/qtcreator/creator-projects-autotools.html",
-    ${IDE_PLUGIN_DEPENDENCIES}
+    ${IDE_PLUGIN_DEPENDENCIES},
+
+    "Mimetypes" : [
+        "<?xml version='1.0' encoding='UTF-8'?>",
+        "<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>",
+        "  <mime-type type='text/x-makefile'>",
+        "    <comment>Makefile build file</comment>",
+        "    <magic priority='20'>",
+        "      <!-- Only magic for default autoconf/automake produced ones -->",
+        "      <match value='# Makefile.in generated by' type='string' offset='0'/>",
+        "      <!-- Not exhaustive, and most people don't set this! -->",
+        "      <match value='#!make' type='string' offset='0'/>",
+        "      <match value='#!/usr/bin/make' type='string' offset='0'/>",
+        "      <match value='#!/usr/local/bin/make' type='string' offset='0'/>",
+        "      <match value='#!/usr/bin/env make' type='string' offset='0'/>",
+        "    </magic>",
+        "    <glob pattern='Makefile'/>",
+        "    <glob pattern='GNUMakefile'/>",
+        "    <glob pattern='*.mk'/>",
+        "    <glob pattern='*.mak'/>",
+        "    <glob weight='10' pattern='Makefile.*'/>",
+        "    <sub-class-of type='text/plain'/>",
+        "  </mime-type>",
+        "</mime-info>"
+    ]
 }