diff --git a/src/external/libBNMR/libLineProfile/LineProfile.pdf b/src/external/libBNMR/libLineProfile/LineProfile.pdf
index 47c93c40..5827e620 100644
Binary files a/src/external/libBNMR/libLineProfile/LineProfile.pdf and b/src/external/libBNMR/libLineProfile/LineProfile.pdf differ
diff --git a/src/external/libBNMR/libLineProfile/LineProfile.tex b/src/external/libBNMR/libLineProfile/LineProfile.tex
index 5e678f91..f655496d 100644
--- a/src/external/libBNMR/libLineProfile/LineProfile.tex
+++ b/src/external/libBNMR/libLineProfile/LineProfile.tex
@@ -141,7 +141,8 @@ height~$1$ and skewness parameter $a$.\\[1.5ex]
       
 \item[PowderLineAxialGss]
    \begin{equation}
-    A(f)= I_{\mathrm ax}(f)\circledast\left( e^{-\frac{(f-f_0)^2}{2 \sigma^2}} \right)
+    A(f)= I_{\mathrm ax}(f)\circledast\left(e^{-\frac{4\ln 2 (f-f_0)^2}{ 
+\sigma^2}} \right)
    \end{equation}
    Powder average of a axially symmetric interaction (Eq.~\ref{eq:Iax}), convoluted with a Gaussian. The maximal height of the curve is normalized to $\sim$1.
    \\[1.5ex]
@@ -177,7 +178,7 @@ height~$1$ and skewness parameter $a$.\\[1.5ex]
 
 \item[PowderLineAsymGss]
    \begin{equation}
-    A(f)= I(f)\circledast\left( e^{-\frac{(f-f_0)^2}{2 \sigma^2}} \right)
+    A(f)= I(f)\circledast\left(e^{-\frac{4\ln 2 (f-f_0)^2}{ \sigma^2}} \right)
    \end{equation}
    Powder average of a asymmetric interaction {(Eq.~\ref{eq:Iasym}\,-\,\ref{eq:Kofm})}, convoluted with a Gaussian. 
    The maximal height of the curve is normalized to $\sim$1.