diff --git a/src/methods/radical/radical.cpp b/src/methods/radical/radical.cpp
index 5aa2aa100189b3e55a7cc930c436921a60d92a34..7a4a2736854e4b66ff75ea227721b7101640c5cd 100644
--- a/src/methods/radical/radical.cpp
+++ b/src/methods/radical/radical.cpp
@@ -69,6 +69,7 @@ void doRadical(float *xMatArr, SP_integer xMatSize, SP_integer xMatRowNum,
     catch(const std::exception& e)
     {
         raisePrologSystemExeption(e.what());
+        return;
     }
 
     
@@ -98,5 +99,6 @@ double doRadical2D(float *xMatArr, SP_integer xMatSize, SP_integer xMatRowNum)
     catch(const std::exception& e)
     {
         raisePrologSystemExeption(e.what());
+        return 0.0;
     }
-}
\ No newline at end of file
+}
diff --git a/src/methods/radical/radical_test.pl b/src/methods/radical/radical_test.pl
index 1b029279e1cf24d8a43e7c5bf81424db3e2bd2ff..b915cbb79ef9988ebb7d21db1c590993d2baa72c 100644
--- a/src/methods/radical/radical_test.pl
+++ b/src/methods/radical/radical_test.pl
@@ -24,7 +24,7 @@ test(radical_InitModel_DoRadical_No_Init) :-
         print(W).
 
 test(radical_InitModel_DoRadical2D_No_Init) :-
-        doRadical2D([5.1,3.5,1.4,4.9,3.0,1.4,4.7,3.2,1.3,4.6,3.1,1.5], 3, Result),
+        doRadical2D([5.1,3.5,1.4,4.9,3.0,1.4], 3, Result),
         print('\nResult: '),
         print(Result).
                                             
@@ -40,9 +40,6 @@ test(radical_InitModel_Negative_Angles, fail) :-
 test(radical_InitModel_Negative_Sweeps, fail) :-
         initModel(0.175,30,150,-1,0).
 
-test(radical_InitModel_Negative_M, fail) :-
-        initModel(0.175,30,150,0,-1).
-        
 
 %% Successful Tests
 
@@ -91,20 +88,26 @@ test(radical_DoRadical_CSV_Input) :-
 :- begin_tests(predicate).      
 
 %% Failure Tests
+
+test(radical_DoRadical2D_More_Than_Two_Data_Points, [error(_, system_error('matrix multiplication: incompatible matrix dimensions: 90x4 and 2x2'))]) :-
+        reset_Model,
+        doRadical2D([5.1,3.5,1.4,4.9,3.0,1.4,4.7,3.2,1.3,4.6,3.1,1.5], 3, Result),
+        print('\nResult: '),
+        print(Result).
         
 
 %% Successful Tests
 
 test(radical_DoRadical2D_Normal_Use) :-
         reset_Model,
-        doRadical2D([5.1,3.5,1.4,4.9,3.0,1.4,4.7,3.2,1.3,4.6,3.1,1.5], 3, Result),
+        doRadical2D([5.1,3.5,1.4,4.9,3.0,1.4], 3, Result),
         print('\nResult: '),
         print(Result).
 
 test(radical_DoRadical2D_CSV_Input) :-
         reset_Model,
         open('src/data_csv/iris2.csv', read, File),
-        take_csv_row(File, skipFirstRow,10, Data),
+        take_csv_row(File, skipFirstRow,2, Data),
         doRadical2D(Data, 4, Result),
         print('\nResult: '),
         print(Result).