diff --git a/bwt_gen.c b/bwt_gen.c
index 76f28c9..f06c1a3 100644
--- a/bwt_gen.c
+++ b/bwt_gen.c
@@ -1602,7 +1602,7 @@ void bwt_bwtgen2(const char *fn_pac, const char *fn_bwt, int block_size)
 {
 	BWTInc *bwtInc;
 	bwtInc = BWTIncConstructFromPacked(fn_pac, block_size, block_size);
-	printf("[bwt_gen] Finished constructing BWT in %u iterations.\n", bwtInc->numberOfIterationDone);
+	fprintf(stderr, "[bwt_gen] Finished constructing BWT in %u iterations.\n", bwtInc->numberOfIterationDone);
 	BWTSaveBwtCodeAndOcc(bwtInc->bwt, fn_bwt, 0);
 	BWTIncFree(bwtInc);
 }
diff --git a/main.c b/main.c
index b652cf0..a0f25fa 100644
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
 #include "utils.h"
 
 #ifndef PACKAGE_VERSION
-#define PACKAGE_VERSION "0.7.15-r1142-dirty"
+#define PACKAGE_VERSION "0.7.15-r1144-dirty"
 #endif
 
 int bwa_fa2pac(int argc, char *argv[]);