diff --git a/source/sjdbInsertJunctions.cpp b/source/sjdbInsertJunctions.cpp
index 698d92da..2200ab79 100644
--- a/source/sjdbInsertJunctions.cpp
+++ b/source/sjdbInsertJunctions.cpp
@@ -63,10 +63,6 @@ void sjdbInsertJunctions(Parameters & P, Genome & mapGen, Genome & mapGen1, Sjdb
     time ( &rawtime );
     P.inOut->logMain     << timeMonthDayTime(rawtime) << " ..... finished inserting junctions into genome" <<endl;
 
-    //write an extra 0 at the end of the array, filling the last bytes that otherwise are not accessible, but will be written to disk
-    //this is - to avoid valgrind complaints. Note that SApass1 is allocated with plenty of space to spare.
-    mapGen.SA.writePacked(mapGen.nSA,0);
-
     if (P.pGe.sjdbInsertSave=="All")
     {//save and copy all genome files into sjdbInsert.outDir, except those created above
         if (P.pGe.gDir != P.sjdbInsert.outDir)