diff --git a/CHANGES.txt b/CHANGES.txt
index 61798a2240..f0fc64cbb8 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -7,6 +7,8 @@ Features
 Bugfixes
 --------
 
+* Fix ``nikola new_post --available-formats`` crashing with TypeError
+  (Issue #3750)
 * Fix the new plugin manager not loading plugins if the plugin folder is a symlink (Issue #3741)
 * Fix the ``nikola plugin`` command not working (Issue #3736)
 
diff --git a/nikola/plugin_manager.py b/nikola/plugin_manager.py
index 37c32ea264..ae93205bcf 100644
--- a/nikola/plugin_manager.py
+++ b/nikola/plugin_manager.py
@@ -59,6 +59,7 @@ class PluginCandidate:
 
     name: str
     description: Optional[str]
+    friendly_name: str
     plugin_id: str
     category: str
     compiler: Optional[str]
@@ -72,6 +73,7 @@ class PluginInfo:
 
     name: str
     description: Optional[str]
+    friendly_name: str
     plugin_id: str
     category: str
     compiler: Optional[str]
@@ -129,6 +131,7 @@ def locate_plugins(self) -> List[PluginCandidate]:
                 continue
             category = config["Nikola"].get("PluginCategory")
             compiler = config["Nikola"].get("Compiler")
+            friendly_name = config["Nikola"].get("friendlyname") or name
             if not category:
                 self.logger.warning(f"{plugin_id} does not specify any category (Nikola.PluginCategory is missing in .plugin file) - plugin will not be loaded")
                 self.has_warnings = True
@@ -144,6 +147,7 @@ def locate_plugins(self) -> List[PluginCandidate]:
                 PluginCandidate(
                     name=name,
                     description=description,
+                    friendly_name=friendly_name,
                     plugin_id=plugin_id,
                     category=category,
                     compiler=compiler,
@@ -225,6 +229,7 @@ def load_plugins(self, candidates: List[PluginCandidate]) -> None:
             info = PluginInfo(
                 name=name,
                 description=candidate.description,
+                friendly_name=candidate.friendly_name,
                 plugin_id=candidate.plugin_id,
                 category=candidate.category,
                 compiler=candidate.compiler,
diff --git a/nikola/plugins/command/new_post.py b/nikola/plugins/command/new_post.py
index aa9662592f..beb139eeb4 100644
--- a/nikola/plugins/command/new_post.py
+++ b/nikola/plugins/command/new_post.py
@@ -520,22 +520,18 @@ def print_compilers(self):
                     False
                 ])
 
-        for name, (_, _, pi) in self.site.disabled_compilers.items():
-            if pi.details.has_option('Nikola', 'Friendlyname'):
-                f_name = pi.details.get('Nikola', 'Friendlyname')
-            else:
-                f_name = name
-            if name in compilers_raw:
+        for plugin in self.site.disabled_compilers.values():
+            if plugin.name in compilers_raw:
                 unused_compilers.append([
-                    name,
-                    f_name,
-                    compilers_raw[name],
+                    plugin.name,
+                    plugin.friendly_name,
+                    compilers_raw[plugin.name],
                     False
                 ])
             else:
                 disabled_compilers.append([
-                    name,
-                    f_name,
+                    plugin.name,
+                    plugin.friendly_name,
                     (),
                     False
                 ])