diff --git a/index.c b/index.c
index cd14d30b..2308dc26 100644
--- a/index.c
+++ b/index.c
@@ -36,7 +36,7 @@ void mm_idx_destroy(mm_idx_t *mi)
 	}
 	for (i = 0; i < mi->n_seq; ++i)
 		free(mi->seq[i].name);
-	free(mi->seq); free(mi->B); free(mi);
+	free(mi->seq); free(mi->B); free(mi->S); free(mi);
 }
 
 const uint64_t *mm_idx_get(const mm_idx_t *mi, uint64_t minier, int *n)
diff --git a/kalloc.c b/kalloc.c
index 2def1bb9..6eb66563 100644
--- a/kalloc.c
+++ b/kalloc.c
@@ -140,7 +140,7 @@ void *krealloc(void *_km, void *ap, size_t n_bytes)
 	n_units = 1 + (n_bytes + sizeof(size_t) - 1) / sizeof(size_t);
 	p = (size_t*)ap - 1;
 	if (*p >= n_units) return ap;
-	q = kmalloc(km, n_bytes);
+	q = (size_t*)kmalloc(km, n_bytes);
 	if (q != ap) memcpy(q, ap, (*p - 1) * sizeof(size_t));
 	kfree(km, ap);
 	return q;
@@ -182,7 +182,7 @@ void *kmalloc(void *_km, size_t n_bytes)
 void *kcalloc(void *_km, size_t count, size_t size)
 {
 	kmem_t *km = (kmem_t*)_km;
-	char *p;
+	void *p;
 	if (size == 0 || count == 0) return 0;
 	if (km == 0) return calloc(count, size);
 	p = kmalloc(km, count * size);
diff --git a/main.c b/main.c
index 3dfad8ee..437ebd2e 100644
--- a/main.c
+++ b/main.c
@@ -131,8 +131,8 @@ int main(int argc, char *argv[])
 		/*
 		for (i = optind + 1; i < argc; ++i)
 			mm_map_file(mi, argv[i], &opt, n_threads, mini_batch_size);
-		mm_idx_destroy(mi);
 		*/
+		mm_idx_destroy(mi);
 	}
 	if (fpw) fclose(fpw);
 	if (fpr) fclose(fpr);
diff --git a/sdust.h b/sdust.h
index 623899a3..47a71651 100644
--- a/sdust.h
+++ b/sdust.h
@@ -1,6 +1,8 @@
 #ifndef SDUST_H
 #define SDUST_H
 
+#include <stdint.h>
+
 struct sdust_buf_s;
 typedef struct sdust_buf_s sdust_buf_t;