diff --git a/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/model/text/TextPageBlock.java b/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/model/text/TextPageBlock.java
index d407fd5..a6367fe 100644
--- a/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/model/text/TextPageBlock.java
+++ b/layoutparser-service/layoutparser-service-processor/src/main/java/com/knecon/fforesight/service/layoutparser/processor/model/text/TextPageBlock.java
@@ -49,7 +49,9 @@ public class TextPageBlock extends AbstractPageBlock {
     public TextPageBlock(List<TextPositionSequence> sequences) {
 
         this.sequences = sequences;
-        calculateFrequencyCounters();
+        if (!sequences.isEmpty()) {
+            calculateFrequencyCounters();
+        }
         calculateBBox();
     }