diff --git a/SolReader.h b/SolReader.h
index 64230ed..55b5e21 100644
--- a/SolReader.h
+++ b/SolReader.h
@@ -116,7 +116,7 @@ inline int SolReader::ReadNextBlock(int opt){
     hit->SetDataType(DataFormat::RAW, ((blockStartIdentifier >> 1) & 0xF) == 0 ? DPPType::PHA : DPPType::PSD);  
   }
   hit->dataType = blockStartIdentifier & 0xF;
-  hit->DPPType = ((blockStartIdentifier >> 1) & 0xF) == 0 ? DPPType::PHA : DPPType::PSD;
+  hit->DPPType = ((blockStartIdentifier >> 4) & 0xF) == 0 ? DPPType::PHA : DPPType::PSD;
 
   if( hit->dataType == DataFormat::ALL){
     if( opt == 0 ){
@@ -236,4 +236,4 @@ void SolReader::ScanNumBlock(){
   
 }
 
-#endif
\ No newline at end of file
+#endif