diff --git a/changelogs/fragments/collection_jinja_cache_fix.yml b/changelogs/fragments/collection_jinja_cache_fix.yml
new file mode 100644
index 00000000000..0835e1e217f
--- /dev/null
+++ b/changelogs/fragments/collection_jinja_cache_fix.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - collection loader - ensure Jinja function cache is fully-populated before lookup
diff --git a/lib/ansible/template/__init__.py b/lib/ansible/template/__init__.py
index ac79b4e588e..1503c82ea7e 100644
--- a/lib/ansible/template/__init__.py
+++ b/lib/ansible/template/__init__.py
@@ -350,12 +350,10 @@ class JinjaPluginIntercept(MutableMapping):
 
             for f in iteritems(method_map()):
                 fq_name = '.'.join((parent_prefix, f[0]))
+                # FIXME: detect/warn on intra-collection function name collisions
                 self._collection_jinja_func_cache[fq_name] = f[1]
 
-            function_impl = self._collection_jinja_func_cache[key]
-
-        # FIXME: detect/warn on intra-collection function name collisions
-
+        function_impl = self._collection_jinja_func_cache[key]
         return function_impl
 
     def __setitem__(self, key, value):