3 files changed, 3 insertions, 3 deletions
diff --git a/modules/libmar/src/mar.h b/modules/libmar/src/mar.h
index 776daf648d..e9c8d555e4 100644
--- a/modules/libmar/src/mar.h
+++ b/modules/libmar/src/mar.h
@@ -109,7 +109,7 @@ int mar_enum_items(MarFile *mar, MarItemCallback callback, void *data);
  * @return          The number of bytes written or a negative value if an
  *                  error occurs.
  */
-int mar_read(MarFile *mar, const MarItem *item, int offset, char *buf,
+int mar_read(MarFile *mar, const MarItem *item, int offset, uint8_t *buf,
              int bufsize);
 
 /**
diff --git a/modules/libmar/src/mar_extract.c b/modules/libmar/src/mar_extract.c
index ec1cd6c534..969697ee29 100644
--- a/modules/libmar/src/mar_extract.c
+++ b/modules/libmar/src/mar_extract.c
@@ -37,7 +37,7 @@ static int mar_ensure_parent_dir(const char *path)
 
 static int mar_test_callback(MarFile *mar, const MarItem *item, void *unused) {
   FILE *fp;
-  char buf[BLOCKSIZE];
+  uint8_t buf[BLOCKSIZE];
   int fd, len, offset = 0;
 
   if (mar_ensure_parent_dir(item->name))
diff --git a/modules/libmar/src/mar_read.c b/modules/libmar/src/mar_read.c
index 241d0c08e4..89b9da27d6 100644
--- a/modules/libmar/src/mar_read.c
+++ b/modules/libmar/src/mar_read.c
@@ -530,7 +530,7 @@ int mar_enum_items(MarFile *mar, MarItemCallback callback, void *closure) {
   return 0;
 }
 
-int mar_read(MarFile *mar, const MarItem *item, int offset, char *buf,
+int mar_read(MarFile *mar, const MarItem *item, int offset, uint8_t *buf,
              int bufsize) {
   int nr;