1 files changed, 3 insertions, 0 deletions
diff --git a/tools/bookmaker/includeParser.cpp b/tools/bookmaker/includeParser.cpp
index 26281b6184..548a3b94da 100644
--- a/tools/bookmaker/includeParser.cpp
+++ b/tools/bookmaker/includeParser.cpp
@@ -1231,6 +1231,9 @@ bool IncludeParser::parseDefine() {
 }
 
 bool IncludeParser::parseEnum(Definition* child, Definition* markupDef) {
+    if (!markupDef) {
+        return child->reportError<bool>("no support for global enum declaration");
+    }
     string nameStr;
     if (child->fTokens.size() > 0) {
         auto token = child->fTokens.begin();