diff --git a/flake8_idom_hooks/utils.py b/flake8_idom_hooks/utils.py
index ec2331a..450c00e 100644
--- a/flake8_idom_hooks/utils.py
+++ b/flake8_idom_hooks/utils.py
@@ -1,6 +1,6 @@
 import ast
 from contextlib import contextmanager
-from typing import List, Tuple, Iterator, Any
+from typing import Any, Iterator, List, Tuple
 
 
 @contextmanager
@@ -28,11 +28,16 @@ def is_hook_def(node: ast.FunctionDef) -> bool:
 
 
 def is_component_def(node: ast.FunctionDef) -> bool:
-    return is_component_function_name(node.name)
+    return any(
+        is_idom_component_decorator(decorator) for decorator in node.decorator_list
+    )
 
 
-def is_component_function_name(name: str) -> bool:
-    return name[0].upper() == name[0] and "_" not in name
+def is_idom_component_decorator(node: Any) -> bool:
+    return getattr(node, "id", None) == "component" or (
+        getattr(getattr(node, "value", None), "id", None) == "idom"
+        and getattr(node, "attr", None) == "component"
+    )
 
 
 def is_hook_function_name(name: str) -> bool:
diff --git a/tests/hook_usage_test_cases.py b/tests/hook_usage_test_cases.py
index 696b86c..76a8367 100644
--- a/tests/hook_usage_test_cases.py
+++ b/tests/hook_usage_test_cases.py
@@ -1,9 +1,15 @@
+import idom
+from idom import component
+
+
+@component
 def HookInIf():
     if True:
         # error: ROH102 hook 'use_state' used inside if statement
         use_state
 
 
+@component
 def HookInElif():
     if False:
         pass
@@ -12,6 +18,7 @@ def HookInElif():
         use_state
 
 
+@component
 def HookInElse():
     if False:
         pass
@@ -20,6 +27,7 @@ def HookInElse():
         use_state
 
 
+@component
 def HookInIfExp():
     (
         # error: ROH102 hook 'use_state' used inside inline if expression
@@ -29,6 +37,7 @@ def HookInIfExp():
     )
 
 
+@component
 def HookInElseOfIfExp():
     (
         None
@@ -39,6 +48,7 @@ def HookInElseOfIfExp():
     )
 
 
+@component
 def HookInTry():
     try:
         # error: ROH102 hook 'use_state' used inside try statement
@@ -47,6 +57,7 @@ def HookInTry():
         pass
 
 
+@component
 def HookInExcept():
     try:
         raise ValueError()
@@ -55,6 +66,7 @@ def HookInExcept():
         use_state
 
 
+@component
 def HookInFinally():
     try:
         pass
@@ -63,12 +75,14 @@ def HookInFinally():
         use_state
 
 
+@component
 def HookInForLoop():
     for i in range(3):
         # error: ROH102 hook 'use_state' used inside for loop
         use_state
 
 
+@component
 def HookInWhileLoop():
     while True:
         # error: ROH102 hook 'use_state' used inside while loop
@@ -82,18 +96,27 @@ def use_state():
 
 
 def generic_function():
+
     # error: ROH101 hook 'use_state' used outside component or hook definition
     use_state
 
 
+@component
 def use_state():
     use_other
 
 
+@component
 def Component():
     use_state
 
 
+@idom.component
+def IdomLongImportComponent():
+    use_state
+
+
+@component
 def use_custom_hook():
     use_state
 
@@ -110,6 +133,7 @@ def not_hook_or_component():
     use_state
 
 
+@component
 def CheckEffects():
     x = 1
     y = 2
@@ -205,8 +229,10 @@ def impropper_usage_of_effect_as_decorator():
     )
 
 
+@component
 def make_component():
     # nested component definitions are ok.
+    @component
     def NestedComponent():
         use_state
 
@@ -214,6 +240,7 @@ def NestedComponent():
 some_global_variable
 
 
+@component
 def Component():
     # referencing a global variable is OK
     use_effect(lambda: some_global_variable, [])
@@ -221,9 +248,11 @@ def Component():
 
 if True:
 
+    @component
     def Component():
         # this is ok since the conditional is outside the component
         use_state
 
+    @component
     def use_other():
         use_state