diff --git a/numass-main/src/main/kotlin/inr/numass/data/Visualization.kt b/numass-main/src/main/kotlin/inr/numass/data/Visualization.kt
index 3eb5a7f8..ab16a760 100644
--- a/numass-main/src/main/kotlin/inr/numass/data/Visualization.kt
+++ b/numass-main/src/main/kotlin/inr/numass/data/Visualization.kt
@@ -54,7 +54,6 @@ fun NumassBlock.plotAmplitudeSpectrum(plotName: String = "spectrum", frameName:
             "showLine" to true
             "showSymbol" to false
             "showErrors" to false
-            "JFreeChart.cache" to true
         }
         plot.configure(meta)
         add(plot)