diff --git a/litellm/proxy/guardrails/guardrail_hooks/aim/aim.py b/litellm/proxy/guardrails/guardrail_hooks/aim/aim.py
index 1ae87e99c9e..737a2d21c99 100644
--- a/litellm/proxy/guardrails/guardrail_hooks/aim/aim.py
+++ b/litellm/proxy/guardrails/guardrail_hooks/aim/aim.py
@@ -58,6 +58,7 @@ class AimGuardrail(CustomGuardrail):
         self.api_base = (
             api_base or os.environ.get("AIM_API_BASE") or "https://api.aim.security"
         )
+        self.api_base = self.api_base.rstrip("/")
         self.ws_api_base = self.api_base.replace("http://", "ws://").replace(
             "https://", "wss://"
         )
diff --git a/tests/guardrails_tests/test_aim_guardrail_base_url.py b/tests/guardrails_tests/test_aim_guardrail_base_url.py
new file mode 100644
index 00000000000..3e230bb32cc
--- /dev/null
+++ b/tests/guardrails_tests/test_aim_guardrail_base_url.py
@@ -0,0 +1,21 @@
+import pytest
+import os
+from litellm.proxy.guardrails.guardrail_hooks.aim.aim import CustomGuardrail
+
+def test_aim_base_url_trailing_slash():
+    # Test with trailing slash
+    guardrail = CustomGuardrail(api_base="https://api.aim.security/")
+    assert guardrail.api_base == "https://api.aim.security"
+    assert guardrail.ws_api_base.startswith("wss://api.aim.security")
+
+    # Test without trailing slash
+    guardrail2 = CustomGuardrail(api_base="https://api.aim.security")
+    assert guardrail2.api_base == "https://api.aim.security"
+    assert guardrail2.ws_api_base.startswith("wss://api.aim.security")
+
+    # Test with environment variable
+    os.environ["AIM_API_BASE"] = "https://api.aim.security/"
+    guardrail3 = CustomGuardrail(api_base=None)
+    assert guardrail3.api_base == "https://api.aim.security"
+    assert guardrail3.ws_api_base.startswith("wss://api.aim.security")
+    del os.environ["AIM_API_BASE"]