diff --git a/core/src/mindustry/mod/ContentParser.java b/core/src/mindustry/mod/ContentParser.java
index af7b2c8d0d..6883b9cedd 100644
--- a/core/src/mindustry/mod/ContentParser.java
+++ b/core/src/mindustry/mod/ContentParser.java
@@ -567,7 +567,8 @@ public class ContentParser{
             case "tank" -> TankUnit::create;
             case "hover" -> ElevationMoveUnit::create;
             case "tether" -> BuildingTetherPayloadUnit::create;
-            default -> throw new RuntimeException("Invalid unit type: '" + value + "'. Must be 'flying/mech/legs/naval/payload/missile/tether'.");
+            case "crawl" -> CrawlUnit::create;
+            default -> throw new RuntimeException("Invalid unit type: '" + value + "'. Must be 'flying/mech/legs/naval/payload/missile/tether/crawl'.");
         };
     }
 
@@ -1012,4 +1013,4 @@ public class ContentParser{
         void parsed(Class<?> type, JsonValue jsonData, Object result);
     }
 
-}
\ No newline at end of file
+}