diff --git a/core/smn_entities.cpp b/core/smn_entities.cpp
index dbc8b59f..54a7e422 100644
--- a/core/smn_entities.cpp
+++ b/core/smn_entities.cpp
@@ -2100,6 +2100,7 @@ static cell_t SetEntPropString(IPluginContext *pContext, const cell_t *params)
 					element);
 			}
 
+			bIsStringIndex = false;
 			if (info.prop->GetProxyFn())
 			{
 				DVariant var;