diff --git a/src/cmark/latex.c b/src/cmark/latex.c
index 4f14d05..3fe1108 100644
--- a/src/cmark/latex.c
+++ b/src/cmark/latex.c
@@ -21,6 +21,8 @@
 static CMARK_INLINE void latex_out_sourcepos(cmark_node *node, cmark_renderer *renderer, int options, int blankline){
   char buffer[100];
   if (CMARK_OPT_SOURCEPOS & options && !renderer->need_cr && (node->type != CMARK_NODE_CODE_BLOCK || blankline)) {
+    if(cmark_node_get_start_line(node) == 0)
+      return; //elements without node such as softbreaks
     snprintf(buffer, 100, " %%sourcepos(%d:%d-%d:%d)",
              cmark_node_get_start_line(node), cmark_node_get_start_column(node),
              cmark_node_get_end_line(node), cmark_node_get_end_column(node));