diff --git a/bwt_gen.c b/bwt_gen.c
index 76f28c99..92691f9d 100644
--- a/bwt_gen.c
+++ b/bwt_gen.c
@@ -1555,8 +1555,10 @@ void BWTFree(BWT *bwt)
 void BWTIncFree(BWTInc *bwtInc)
 {
 	if (bwtInc == 0) return;
-	free(bwtInc->bwt);
+	BWTFree(bwtInc->bwt);
 	free(bwtInc->workingMemory);
+	free(bwtInc->cumulativeCountInCurrentBuild);
+	free(bwtInc->packedShift);
 	free(bwtInc);
 }