diff --git a/lib/symbols b/lib/symbols
index f69d28438a..2d9b2f3fb2 100644
--- a/lib/symbols
+++ b/lib/symbols
@@ -925,8 +925,10 @@ exp                lyxblacktext  0   0 func     x
 Pr                 lyxblacktext  0   0 funclim  x
 gcd                lyxblacktext  0   0 funclim  x
 deg                lyxblacktext  0   0 func     x
+mod                lyxblacktext  0   0 func     x     amsmath
 bmod               lyxblacktext  0   0 func     x
 pmod               lyxblacktext  0   0 func     x
+pod                lyxblacktext  0   0 func     x     amsmath
 
 
 # mathtools.sty