diff --git a/doxygen/Doxyconfig b/doxygen/Doxyconfig
index 3f5e4c1..4554b1d 100644
--- a/doxygen/Doxyconfig
+++ b/doxygen/Doxyconfig
@@ -1766,7 +1766,7 @@ PAPER_TYPE             = a4
 # If left blank no extra packages will be included.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
-EXTRA_PACKAGES         =
+EXTRA_PACKAGES         = amsmath
 
 # The LATEX_HEADER tag can be used to specify a personal LaTeX header for the
 # generated LaTeX document. The header should contain everything until the first