diff --git a/ground/uavobjgenerator/generators/generator_common.h b/ground/uavobjgenerator/generators/generator_common.h
index 0ae6f470e..719a6c3af 100644
--- a/ground/uavobjgenerator/generators/generator_common.h
+++ b/ground/uavobjgenerator/generators/generator_common.h
@@ -31,7 +31,7 @@
 #include "generator_io.h"
 
 // These special chars (regexp) will be removed from C/java identifiers
-#define ENUM_SPECIAL_CHARS "[\\.\\-\\s/]"
+#define ENUM_SPECIAL_CHARS "[\\.\\-\\s\\+/]"
 
 void replaceCommonTags(QString& out, ObjectInfo* info);
 void replaceCommonTags(QString& out);