diff --git a/src/storm-parsers/parser/PrismParser.h b/src/storm-parsers/parser/PrismParser.h
index 2668dcb68..d7105acc4 100644
--- a/src/storm-parsers/parser/PrismParser.h
+++ b/src/storm-parsers/parser/PrismParser.h
@@ -37,7 +37,6 @@ namespace storm {
                 formulas.clear();
                 globalBooleanVariables.clear();
                 globalIntegerVariables.clear();
-                moduleToIndexMap.clear();
                 modules.clear();
                 rewardModels.clear();
                 labels.clear();