diff --git a/src/main/java/net/fabricmc/loom/configuration/providers/forge/FieldMigratedMappingConfiguration.java b/src/main/java/net/fabricmc/loom/configuration/providers/forge/FieldMigratedMappingConfiguration.java
index 7a96e6db..cdcbf202 100644
--- a/src/main/java/net/fabricmc/loom/configuration/providers/forge/FieldMigratedMappingConfiguration.java
+++ b/src/main/java/net/fabricmc/loom/configuration/providers/forge/FieldMigratedMappingConfiguration.java
@@ -35,7 +35,6 @@ import java.util.AbstractMap;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
@@ -103,7 +102,7 @@ public final class FieldMigratedMappingConfiguration extends MappingConfiguratio
 
 	public static String createForgeMappingsIdentifier(LoomGradleExtension extension, String mappingsName, String version, String classifier, String minecraftVersion) {
 		final String base = FieldMigratedMappingConfiguration.createMappingsIdentifier(mappingsName, version, classifier, minecraftVersion);
-		final String platform = extension.getPlatform().get().name().toLowerCase(Locale.ROOT);
+		final String platform = extension.getPlatform().get().id();
 		final String forgeVersion = extension.getForgeProvider().getVersion().getCombined();
 		return base + "-" + platform + "-" + forgeVersion;
 	}
diff --git a/src/main/java/net/fabricmc/loom/util/ModPlatform.java b/src/main/java/net/fabricmc/loom/util/ModPlatform.java
index c1e69ef8..b5e6588f 100644
--- a/src/main/java/net/fabricmc/loom/util/ModPlatform.java
+++ b/src/main/java/net/fabricmc/loom/util/ModPlatform.java
@@ -45,6 +45,13 @@ public enum ModPlatform {
 		this.experimental = experimental;
 	}
 
+	/**
+	 * {@return the lowercase ID of this mod platform}
+	 */
+	public String id() {
+		return name().toLowerCase(Locale.ROOT);
+	}
+
 	public boolean isExperimental() {
 		return experimental;
 	}
@@ -60,8 +67,8 @@ public enum ModPlatform {
 	public static void assertPlatform(LoomGradleExtensionAPI extension, ModPlatform platform) {
 		assertPlatform(extension, platform, () -> {
 			String msg = "Loom is not running on %s.%nYou can switch to it by adding 'loom.platform = %s' to your gradle.properties";
-			String name = platform.name().toLowerCase(Locale.ROOT);
-			return msg.formatted(name, name);
+			String id = platform.id();
+			return msg.formatted(id, id);
 		});
 	}