diff --git a/src/mathed/math_support.C b/src/mathed/math_support.C
index 6d83d3aa74..272fe1766c 100644
--- a/src/mathed/math_support.C
+++ b/src/mathed/math_support.C
@@ -537,6 +537,7 @@ fontinfo fontinfos[] = {
 	{"mathfrak", LyXFont::EUFRAK_FAMILY, inh_series, inh_shape, LColor::math},
 	{"mathrm", LyXFont::ROMAN_FAMILY, inh_series, inh_shape, LColor::math},
 	{"mathsf", LyXFont::SANS_FAMILY, inh_series, inh_shape, LColor::math},
+	{"mathbb", LyXFont::MSB_FAMILY, inh_series, inh_shape, LColor::math},
 	{"cmex",   LyXFont::CMEX_FAMILY, inh_series, inh_shape, LColor::math},
 	{"cmm",    LyXFont::CMM_FAMILY, inh_series, inh_shape, LColor::math},
 	{"cmr",    LyXFont::CMR_FAMILY, inh_series, inh_shape, LColor::math},