diff --git a/src/include/PRunDataHandler.h b/src/include/PRunDataHandler.h
index 30d533af..51e00753 100644
--- a/src/include/PRunDataHandler.h
+++ b/src/include/PRunDataHandler.h
@@ -627,7 +627,7 @@ Bool_t PRunDataHandler::ReadNexusFileIdf1(T& nxs_file)
     runData.SetDeadTimeParam(dt);
   }
   if (nxs_file->HasDataset("/run/instrument/beam/frames_good")) {
-    ival = nxs_file->template GetDataset<float>("/run/instrument/beam/frames_good").GetData()[0];
+    ival = nxs_file->template GetDataset<int>("/run/instrument/beam/frames_good").GetData()[0];
     runData.SetNumberOfGoodFrames(ival);
   }