diff --git a/linux/CalcNF2FF.m.patch b/linux/CalcNF2FF.m.patch
new file mode 100644
index 0000000..ae091af
--- /dev/null
+++ b/linux/CalcNF2FF.m.patch
@@ -0,0 +1,14 @@
+diff --git a/matlab/CalcNF2FF.m b/matlab/CalcNF2FF.m
+index 35c11c7..1638110 100644
+--- a/matlab/CalcNF2FF.m
++++ b/matlab/CalcNF2FF.m
+@@ -83,7 +83,8 @@ cd(Sim_Path);
+ try
+     if isunix
+         % remove LD_LIBRARY_PATH set by matlab
+-        system(['export LD_LIBRARY_PATH=; ' openEMS_Path 'nf2ff/nf2ff ' filename '.xml']);
++        % this is a packaged openEMS; nf2ff is found within PATH
++        system(['LD_LIBRARY_PATH=; nf2ff ' filename '.xml']);
+     else
+         system([openEMS_Path 'nf2ff.exe ' filename '.xml']);
+     end
diff --git a/linux/debian.series b/linux/debian.series
index fb3707b..61ef578 100644
--- a/linux/debian.series
+++ b/linux/debian.series
@@ -1,2 +1,3 @@
 invoke_openEMS.m.patch -p1
 README.patch -p1
+CalcNF2FF.m.patch -p1
diff --git a/linux/openEMS.spec b/linux/openEMS.spec
index 580471f..97524eb 100644
--- a/linux/openEMS.spec
+++ b/linux/openEMS.spec
@@ -27,6 +27,7 @@ URL:            http://www.openems.de
 Source0:        %{name}-%{version}.tar.bz2
 Patch0:         invoke_openEMS.m.patch
 Patch1:         README.patch
+Patch2:         CalcNF2FF.m.patch
 BuildRoot:      %_tmppath/%name-%version-build
 
 # libqt4-devel is needed only to provide qmake (the Qt-libraries are not used)
@@ -54,6 +55,7 @@ OpenEMS is a free and open-source electromagnetic field solver using the (EC-)FD
 #%patch1 -p1
 #%endif
 %patch1 -p1
+%patch2 -p1
 
 %build
 ADDFLAGS="-msse" # enable at least the SSE command set (no SSE makes no sense -- way too slow)