diff --git a/IPython/nbconvert/templates/latex/sphinx_base.tplx b/IPython/nbconvert/templates/latex/sphinx_base.tplx
index 1874ab4..f3b8268 100644
--- a/IPython/nbconvert/templates/latex/sphinx_base.tplx
+++ b/IPython/nbconvert/templates/latex/sphinx_base.tplx
@@ -359,7 +359,7 @@ Note: For best display, use latex syntax highlighting. =))
 ((*- endblock -*))
 
 ((*- block data_pdf -*))
-    ((( conditionally_center_output(insert_graphics(output.pdf_filename[:-4])) )))
+    ((( conditionally_center_output(insert_graphics(output.pdf_filename)) )))
 ((*- endblock -*))
 
 ((*- block data_latex *))