diff --git a/ConvertData.m b/ConvertData.m
index a4281c9e3c9b857c34bdf24246d31aa6c60338a8..24865c530f04bebfb8f039489706c3ee253919da 100644
--- a/ConvertData.m
+++ b/ConvertData.m
@@ -8,7 +8,7 @@ function[convertedData]=ConvertData(orgData, varNames, rowNames)
 
 
 if nargin<2
-    varNames=orgData{:,1};
+    varNames=table2cell(orgData(:,1));
     orgData(:,1)=[];
 end
 if nargin<3