diff --git a/rendercv/themes/classic/Header.j2.tex b/rendercv/themes/classic/Header.j2.tex
index f507ea4..940ee5a 100644
--- a/rendercv/themes/classic/Header.j2.tex
+++ b/rendercv/themes/classic/Header.j2.tex
@@ -11,9 +11,9 @@
     \normalsize
     ((* for connection in cv.connections *))
     \mbox{((*- if connection["url"] -*))
-        \hrefWithoutArrow{<<connection["url"]>>}{{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]>>}
+        \hrefWithoutArrow{<<connection["url"]>>}{{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]|escape_latex_characters>>}
         ((*- else -*))
-        {\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]>>
+        {\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]|escape_latex_characters>>
         ((*- endif -*))}
     \kern <<design.margins.header.horizontal_between_connections>>
     ((* endfor *))
diff --git a/rendercv/themes/engineeringresumes/Header.j2.tex b/rendercv/themes/engineeringresumes/Header.j2.tex
index d9517ba..fc9da31 100644
--- a/rendercv/themes/engineeringresumes/Header.j2.tex
+++ b/rendercv/themes/engineeringresumes/Header.j2.tex
@@ -17,9 +17,9 @@
     \normalsize
     ((* for connection in cv.connections *))
     \mbox{((*- if connection["url"] -*))
-        \hrefWithoutArrow{<<connection["url"]>>}{<<connection["clean_url"]>>}
+        \hrefWithoutArrow{<<connection["url"]>>}{<<connection["clean_url"]|escape_latex_characters>>}
         ((*- else -*))
-        <<connection["placeholder"]>>
+        <<connection["placeholder"]|escape_latex_characters>>
         ((*- endif -*))}%
     \kern <<design.margins.header.horizontal_between_connections|divide_length_by(2)>>%
     ((* if not loop.last *))
diff --git a/rendercv/themes/sb2nov/Header.j2.tex b/rendercv/themes/sb2nov/Header.j2.tex
index b95dd09..d57b20f 100644
--- a/rendercv/themes/sb2nov/Header.j2.tex
+++ b/rendercv/themes/sb2nov/Header.j2.tex
@@ -10,9 +10,9 @@
     \normalsize
     ((* for connection in cv.connections *))
     \mbox{((*- if connection["url"] -*))
-        \hrefWithoutArrow{<<connection["url"]>>}{\color{black}{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]>>}
+        \hrefWithoutArrow{<<connection["url"]>>}{\color{black}{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]|escape_latex_characters>>}
         ((*- else -*))
-        {\color{black}{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]>>}
+        {\color{black}{\footnotesize<<connection["latex_icon"]>>}\hspace*{0.13cm}<<connection["placeholder"]|escape_latex_characters>>}
         ((*- endif -*))}
     \kern <<design.margins.header.horizontal_between_connections>>
     ((* endfor *))