diff --git a/packages/fcl-db/tests/testfieldtypes.pas b/packages/fcl-db/tests/testfieldtypes.pas
index f4a95fafc9..7538fddc44 100644
--- a/packages/fcl-db/tests/testfieldtypes.pas
+++ b/packages/fcl-db/tests/testfieldtypes.pas
@@ -770,6 +770,10 @@ begin
 
     ShortDateFormat := 'yyyy-mm-dd';
 
+    // There is no Param.AsFixedChar, so the datatype has to be set manually
+    if ADatatype=ftFixedChar then
+      Params.ParamByName('field1').DataType := ftFixedChar;
+
     for i := 0 to testValuesCount -1 do
       begin
       Params.ParamByName('id').AsInteger := i;
@@ -801,13 +805,7 @@ begin
         ftInteger: AssertEquals(testIntValues[i],FieldByName('FIELD1').AsInteger);
         ftFloat  : AssertEquals(testFloatValues[i],FieldByName('FIELD1').AsFloat);
         ftBCD    : AssertEquals(testBCDValues[i],FieldByName('FIELD1').AsCurrency);
-        ftFixedChar :
-                   begin
-                   if FieldByName('FIELD1').isnull then
-                     AssertEquals(testStringValues[i],FieldByName('FIELD1').AsString)
-                   else
-                     AssertEquals(PadRight(testStringValues[i],10),FieldByName('FIELD1').AsString);
-                   end;
+        ftFixedChar : AssertEquals(PadRight(testStringValues[i],10),FieldByName('FIELD1').AsString);
         ftString : AssertEquals(testStringValues[i],FieldByName('FIELD1').AsString);
         ftdate   : AssertEquals(testDateValues[i],FormatDateTime('yyyy/mm/dd',FieldByName('FIELD1').AsDateTime));
       else