diff --git a/lib/doc/UserGuide.lyx b/lib/doc/UserGuide.lyx
index de4786a1ba..b7c76aa624 100644
--- a/lib/doc/UserGuide.lyx
+++ b/lib/doc/UserGuide.lyx
@@ -18988,7 +18988,7 @@ mathtt
 \layout Standard
 
 
-\begin_inset Formula $\mathbf{\mathbb{BLACKBOARD}}$
+\begin_inset Formula $\mathbb{BLACKBOARD}$
 \end_inset 
 
 
diff --git a/lib/doc/de_UserGuide.lyx b/lib/doc/de_UserGuide.lyx
index b8d975eb29..1ad595c255 100644
--- a/lib/doc/de_UserGuide.lyx
+++ b/lib/doc/de_UserGuide.lyx
@@ -20968,7 +20968,7 @@ ungen benutzt werden, zum Beispiel der altdeutsche Frakturfont, der nach
 mathfrak{g}
 \family default 
  ein Fraktur-
-\begin_inset Formula $\mathfrak{{g}}$
+\begin_inset Formula $\mathfrak{g}$
 \end_inset 
 
  druckt, oder die 
@@ -20986,7 +20986,7 @@ Wandtafel
 mathbb{R}
 \family default 
  
-\begin_inset Formula $\mathbb{{R}}$
+\begin_inset Formula $\mathbb{R}$
 \end_inset 
 
  für reelle und komplexe Zahlen.
diff --git a/lib/doc/eu_UserGuide.lyx b/lib/doc/eu_UserGuide.lyx
index a3db8e4a21..880147f026 100644
--- a/lib/doc/eu_UserGuide.lyx
+++ b/lib/doc/eu_UserGuide.lyx
@@ -15613,7 +15613,7 @@ x^{y^z}
 
 
 \begin_inset Formula \[
-{x^{y}}^{z}\mathrm{\, eta\, x^{{y^{z}}}\, ezberdinak\, dira}\]
+{x^y}^{z}\mathrm{\, eta\, x^{{y^z}}\, ezberdinak\, dira}\]
 
 \end_inset 
 
@@ -16299,7 +16299,7 @@ mathrm
 \layout Standard
 
 
-\begin_inset Formula $\mathbf{\mathbf{Lodia}}$
+\begin_inset Formula $\mathbf{Lodia}$
 \end_inset 
 
 
@@ -16383,7 +16383,7 @@ mathtt
 \layout Standard
 
 
-\begin_inset Formula $\mathbf{\mathbb{BLACKBOARD}}$
+\begin_inset Formula $\mathbb{BLACKBOARD}$
 \end_inset