diff --git a/src/systems/scanning.cpp b/src/systems/scanning.cpp
index 7464d7bc27..277c5cbd77 100644
--- a/src/systems/scanning.cpp
+++ b/src/systems/scanning.cpp
@@ -53,8 +53,8 @@ void ScanningSystem::scanningFinished(sp::ecs::Entity command_source)
         case ScanState::State::FullScan:
             break;
         }
-
-        LuaConsole::checkResult(ss->on_scan_completed.call<void>(scanner->target, command_source, scanner->source));
+        if (ss->on_scan_completed)
+            LuaConsole::checkResult(ss->on_scan_completed.call<void>(scanner->target, command_source, scanner->source));
     }
 
     scanner->target = {};