diff --git a/kernel/ClassStuff/@itaValue/itaValue.m b/kernel/ClassStuff/@itaValue/itaValue.m
index 90f195cfd2f351e798bf447c01a5a7d479f170c7..4d42e7b92c269c5ec542d729013eb46c63e35810 100644
--- a/kernel/ClassStuff/@itaValue/itaValue.m
+++ b/kernel/ClassStuff/@itaValue/itaValue.m
@@ -39,8 +39,8 @@ classdef itaValue
                     elseif ischar(varargin{1})
                         token = varargin{1}(:).';
                         
-                        if ~isempty(str2num(token)) %pre check if only a value inside, pdi
-                            A.value = str2num(token);
+                        if ~isnan(str2double(token)) %pre check if only a value inside, pdi
+                            A.value = str2double(token);
                         else
                             %token_new = token; token_new(token_new == '.') = ' ';
                             unit_start = find(isstrprop(token,'alpha'));
@@ -59,10 +59,12 @@ classdef itaValue
                                 else
                                     unit_start = unit_start(1);
                                 end
+							catch
+								% do nothing
                             end
                             value_token = token(1:unit_start-1);
                             value_token = value_token(value_token ~= ' ');
-                            A.value = str2num(value_token); %#ok<ST2NM>
+                            A.value = sscanf(value_token,'%f');
                             if isempty(A.value)
                                 A.value = 1;
                             end
@@ -95,7 +97,7 @@ classdef itaValue
             if length(a) > 1
                 res = [];
                 for idx = 1:length(a)
-                    res = [res ' '  num2str(a(idx),varargin{:})];
+                    res = [res ' '  num2str(a(idx),varargin{:})]; %#ok<AGROW>
                 end
             else
                 res = num2str(a.value(:),varargin{:});
@@ -145,7 +147,7 @@ classdef itaValue
             % invert a matrix
             res    = ita_unit_inv(a);
             values = inv(double(a));
-            for idx = 1:size(a,1);
+            for idx = 1:size(a,1)
                 for jdx = 1:size(a,2)
                     res(idx,jdx).value = values(idx,jdx);
                 end
@@ -189,23 +191,13 @@ classdef itaValue
         
         %% disp
         function disp(a)
-            % show the variable value and string
-            %             spacing = 10;
-            %             for idx = 1:size(a,1)
-            %                 aux = '';
-            %                 for jdx = 1:size(a,2)
-            %                     newString = num2str(a(idx,jdx));
-            %                     aux = [newString repmat('',1,spacing - length(newString))];
-            %                 end
-            %                 disp(aux)
-            %             end
             disp(num2str(a))
         end
         
-        function display(a)
+        function display(a) %#ok<DISPLAY>
             % show the variable value and string
             x = ver('matlab');
-            if isempty(javachk('desktop')) && str2num(x.Version) < 7.13    % check if we are in desktop mode
+            if isempty(javachk('desktop')) && sscanf(x.Version,'%f') < 7.13    % check if we are in desktop mode
                 spacing = 15;
                 if size(a,1) == 1 && size(a,2) == 1 %normal 1D disp
                     
@@ -286,13 +278,13 @@ classdef itaValue
             end
             
             varargout{1} = res; %return string for e.g. legend
-            if nargout >= 2;
+            if nargout >= 2
                 varargout{2} = val; %return double for division
             end
-            if nargout >= 3;
+            if nargout >= 3
                 varargout{3} = log_prefix; %scaling factor for log10
             end
         end
     end
     
-end
\ No newline at end of file
+end
diff --git a/kernel/MetaInfo/ita_deal_units.m b/kernel/MetaInfo/ita_deal_units.m
index ba6fdb44aae114b31c48c28040cf719672817c9e..7819fe5c2858a957f477aede6640007e9d059151 100644
--- a/kernel/MetaInfo/ita_deal_units.m
+++ b/kernel/MetaInfo/ita_deal_units.m
@@ -158,8 +158,8 @@ end
             end
         end
         
-        [num1 den1] = unitstr2nums(numToken);
-        [den2 num2] = unitstr2nums(denToken);
+        [num1, den1] = unitstr2nums(numToken);
+        [den2, num2] = unitstr2nums(denToken);
         num         = num1 * num2;
         den         = den1 * den2;
         
@@ -169,7 +169,7 @@ end
                 return;
             end
             unitStr(unitStr == '*') = ' ';
-            tokenPos = findstr(unitStr,' ');
+            tokenPos = strfind(unitStr,' ');
             tokenPos = [1 tokenPos length(unitStr)];
             num = 1; den = 1; %init
             
@@ -192,7 +192,7 @@ end
                     end
                     exponent = 1;
                     if any(isstrprop(token,'digit'))
-                        exponent = str2num(token(isstrprop(token,'digit')));
+                        exponent = sscanf(token(isstrprop(token,'digit')),'%f');
                         token = token(~isstrprop(token,'digit'));
                     end
                                         
@@ -253,7 +253,6 @@ end
                             den = den * cc.tesla(2).^exponent;
                         case 'rad'
                             num = num * cc.rad.^exponent;
-                            den = den;
                         otherwise
                             if ~isempty(token)
                                 ita_verbose_info(['Oh Lord. I do not know this unit: ' token '! Ignoring this...'])
@@ -355,10 +354,10 @@ end
         end
         
         %% more than one element?
-        if ~isempty( findstr(numStr,' ') ) %#ok<*REMFF1> %more than one token
+        if ~isempty(strfind(numStr,' ')) %#ok<*REMFF1> %more than one token
             numStr = ['(' numStr ')'];
         end
-        if ~isempty( findstr(denStr,' ') ) %more than one token
+        if ~isempty(strfind(denStr,' ')) %more than one token
             denStr = ['(' denStr ')'];
         end
         if isempty(numStr) && isempty(denStr)
@@ -694,7 +693,7 @@ end
                 for i = maxExponent:-1:1
                     if isfactor(numFactor.^i,iNum) && isfactor(denFactor.^i,iDen)
                         if i ~= 1
-                            newString = [newString '^' num2str(i)]; %#ok<AGROW>
+                            newString = [newString '^' num2str(i)];
                         end
                         iNum = iNum/numFactor.^i;
                         iDen = iDen/denFactor.^i;
@@ -831,7 +830,7 @@ end
         
         function [iNum, iDen, numString] = check4hertz(iNum,iDen,numString)
             numFactor = 1; denFactor = cc.second; newString = 'Hz'; %hertz
-            if iDen == denFactor && iNum == numFactor;
+            if iDen == denFactor && iNum == numFactor
                 iNum = iNum/numFactor;
                 iDen = iDen/denFactor;
                 numString = appendString(numString,newString);