diff --git a/src/svf/svf.c b/src/svf/svf.c
index 0cca768..fa79c23 100644
--- a/src/svf/svf.c
+++ b/src/svf/svf.c
@@ -219,7 +219,7 @@ static size_t svf_command_buffer_size = 0;
 static int svf_line_number = 1;
 static int svf_getline (char **lineptr, size_t *n, FILE *stream);
 
-#define SVF_MAX_BUFFER_SIZE_TO_COMMIT	(4 * 1024)
+#define SVF_MAX_BUFFER_SIZE_TO_COMMIT	(8 * 4 * 1024)
 static uint8_t *svf_tdi_buffer = NULL, *svf_tdo_buffer = NULL, *svf_mask_buffer = NULL;
 static int svf_buffer_index = 0, svf_buffer_size = 0;
 static int svf_quiet = 0;