diff --git a/config.py b/config.py
index aed72aa6..ab971c6d 100644
--- a/config.py
+++ b/config.py
@@ -60,6 +60,7 @@ UPPER_WORDS = {
         "sa", "sc", "sts", "svc",
     ),
     "oci": ("oci",),
+    "elastic": ("apm", "siem", "ece", "eck"),
 }
 
 TITLE_WORDS = {
diff --git a/diagrams/elastic/observability.py b/diagrams/elastic/observability.py
index 061eb4a4..3001340d 100644
--- a/diagrams/elastic/observability.py
+++ b/diagrams/elastic/observability.py
@@ -8,7 +8,7 @@ class _Observability(_Elastic):
     _icon_dir = "resources/elastic/observability"
 
 
-class Apm(_Observability):
+class APM(_Observability):
     _icon = "apm.png"
 
 
diff --git a/diagrams/elastic/orchestration.py b/diagrams/elastic/orchestration.py
index 4346690f..99084cc7 100644
--- a/diagrams/elastic/orchestration.py
+++ b/diagrams/elastic/orchestration.py
@@ -8,11 +8,11 @@ class _Orchestration(_Elastic):
     _icon_dir = "resources/elastic/orchestration"
 
 
-class Ece(_Orchestration):
+class ECE(_Orchestration):
     _icon = "ece.png"
 
 
-class Eck(_Orchestration):
+class ECK(_Orchestration):
     _icon = "eck.png"
 
 
diff --git a/diagrams/elastic/security.py b/diagrams/elastic/security.py
index d7cd16e9..34afe3e0 100644
--- a/diagrams/elastic/security.py
+++ b/diagrams/elastic/security.py
@@ -16,7 +16,7 @@ class Security(_Security):
     _icon = "security.png"
 
 
-class Siem(_Security):
+class SIEM(_Security):
     _icon = "siem.png"
 
 
diff --git a/docs/nodes/elastic.md b/docs/nodes/elastic.md
index cc72ca77..ce5d3c7a 100644
--- a/docs/nodes/elastic.md
+++ b/docs/nodes/elastic.md
@@ -26,7 +26,7 @@ Node classes list of elastic provider.
 
 ## elastic.observability
 
-- **diagrams.elastic.observability.Apm**
+- **diagrams.elastic.observability.APM**
 - **diagrams.elastic.observability.Logs**
 - **diagrams.elastic.observability.Metrics**
 - **diagrams.elastic.observability.Observability**
@@ -34,11 +34,11 @@ Node classes list of elastic provider.
 
 ## elastic.orchestration
 
-- **diagrams.elastic.orchestration.Ece**
-- **diagrams.elastic.orchestration.Eck**
+- **diagrams.elastic.orchestration.ECE**
+- **diagrams.elastic.orchestration.ECK**
 
 ## elastic.security
 
 - **diagrams.elastic.security.Endpoint**
 - **diagrams.elastic.security.Security**
-- **diagrams.elastic.security.Siem**
+- **diagrams.elastic.security.SIEM**