1 files changed, 3 insertions, 1 deletions
diff --git a/src/input/input_pnm.c b/src/input/input_pnm.c
index af2b8add2..f609695d5 100644
--- a/src/input/input_pnm.c
+++ b/src/input/input_pnm.c
@@ -97,7 +97,9 @@ static buf_element_t *pnm_plugin_read_block (input_plugin_t *this_gen,
 
   lprintf ("pnm_plugin_read_block: %"PRId64" bytes...\n", todo);
 
-  if (todo < 0 || todo > buf->size) {
+  if (todo > buf->max_size)
+    todo = buf->max_size;
+  if (todo < 0) {
     buf->free_buffer (buf);
     return NULL;
   }