diff --git a/R/footnote_marker.R b/R/footnote_marker.R
index 1f0e6eb..d5d021b 100644
--- a/R/footnote_marker.R
+++ b/R/footnote_marker.R
@@ -67,6 +67,7 @@
     return(paste0("<sup>", x, "</sup>"))
   } else {
     x <- number_index$symbol.latex[x]
+    x <- gsub("\\\\\\\\", "\\\\", x)
     return(paste0("\\textsuperscript{", x, "}"))
   }
 }