diff --git a/README.md b/README.md
index c4fd6d9..3b3fc59 100644
--- a/README.md
+++ b/README.md
@@ -87,10 +87,8 @@ highlighted in bold.
 ## Limitations
 
 * Minimap2 may produce suboptimal alignments through long low-complexity
-  regions where seed positions may be inaccurate.
-
-* Minimap2 may produce poor alignments that may need post-filtering. We are
-  still exploring a reliable and consistent way to report good alignments.
+  regions where seed positions may be suboptimal. This should not be a big
+  concern because even the optimal alignment may be wrong in such regions.
 
 * Minimap2 does not work well with Illumina short reads as of now.
 
diff --git a/ksw2_ll_sse.c b/ksw2_ll_sse.c
index 37311f7..6e13049 100644
--- a/ksw2_ll_sse.c
+++ b/ksw2_ll_sse.c
@@ -88,7 +88,7 @@ int ksw_ll_i16(void *q_, int tlen, const uint8_t *target, int _gapo, int _gape,
 		(xx) = _mm_max_epi16((xx), _mm_srli_si128((xx), 8)); \
 		(xx) = _mm_max_epi16((xx), _mm_srli_si128((xx), 4)); \
 		(xx) = _mm_max_epi16((xx), _mm_srli_si128((xx), 2)); \
-    	(ret) = _mm_extract_epi16((xx), 0); \
+		(ret) = _mm_extract_epi16((xx), 0); \
 	} while (0)
 
 	// initialization
diff --git a/main.c b/main.c
index 18510f8..f74b606 100644
--- a/main.c
+++ b/main.c
@@ -8,7 +8,7 @@
 #include "minimap.h"
 #include "mmpriv.h"
 
-#define MM_VERSION "2.0-r229-dirty"
+#define MM_VERSION "2.0-r230-dirty"
 
 void liftrlimit()
 {
diff --git a/minimap2.1 b/minimap2.1
index f9b84e5..5286ef9 100644
--- a/minimap2.1
+++ b/minimap2.1
@@ -1,4 +1,4 @@
-.TH minimap2 1 "29 July 2017" "minimap2-2.0-r224-dirty" "Bioinformatics tools"
+.TH minimap2 1 "30 July 2017" "minimap2-2.0-r230-dirty" "Bioinformatics tools"
 .SH NAME
 .PP
 minimap2 - mapping and alignment between collections of DNA sequences
@@ -348,10 +348,6 @@ where seed positions may be suboptimal. This should not be a big concern
 because even the optimal alignment may be wrong in such regions.
 .TP
 *
-Minimap2 may produce poor alignments that may need post-filtering. We are still
-exploring a reliable and consistent way to report good alignments.
-.TP
-*
 Minimap2 does not work well with Illumina short reads as of now.
 .TP
 *