diff --git a/images/minimal-notebook/setup-scripts/setup_julia.py b/images/minimal-notebook/setup-scripts/setup_julia.py
index e6221238..bf6cc62e 100755
--- a/images/minimal-notebook/setup-scripts/setup_julia.py
+++ b/images/minimal-notebook/setup-scripts/setup_julia.py
@@ -20,13 +20,9 @@ LOGGER = logging.getLogger(__name__)
 
 def unify_aarch64(platform: str) -> str:
     """
-    Renames arm64->aarch64 to support local builds on on aarch64 Macs
+    Renames arm64->aarch64 to support local builds on aarch64 Macs
     """
-    return {
-        "aarch64": "aarch64",
-        "arm64": "aarch64",
-        "x86_64": "x86_64",
-    }[platform]
+    return {"arm64": "aarch64"}.get(platform, platform)
 
 
 def get_latest_julia_url() -> tuple[str, str]:
diff --git a/tagging/get_platform.py b/tagging/get_platform.py
index cda791ab..76e5b88c 100644
--- a/tagging/get_platform.py
+++ b/tagging/get_platform.py
@@ -7,13 +7,9 @@ ALL_PLATFORMS = {"x86_64", "aarch64"}
 
 def unify_aarch64(platform: str) -> str:
     """
-    Renames arm64->aarch64 to support local builds on on aarch64 Macs
+    Renames arm64->aarch64 to support local builds on aarch64 Macs
     """
-    return {
-        "aarch64": "aarch64",
-        "arm64": "aarch64",
-        "x86_64": "x86_64",
-    }[platform]
+    return {"arm64": "aarch64"}.get(platform, platform)
 
 
 def get_platform() -> str: