diff --git a/packages/fcl-db/src/base/db.pas b/packages/fcl-db/src/base/db.pas
index f7fb584cbf..36e36038f2 100644
--- a/packages/fcl-db/src/base/db.pas
+++ b/packages/fcl-db/src/base/db.pas
@@ -1212,7 +1212,6 @@ type
     Procedure SetAsBlob(const AValue: TBlobData); virtual;
     Procedure SetAsBoolean(AValue: Boolean); virtual;
     Procedure SetAsBytes(const AValue: TBytes); virtual;
-    Procedure SetAsBlobData(const AValue: TBlobData); virtual;
     Procedure SetAsCurrency(const AValue: Currency); virtual;
     Procedure SetAsDate(const AValue: TDateTime); virtual;
     Procedure SetAsDateTime(const AValue: TDateTime); virtual;
@@ -1248,7 +1247,7 @@ type
     Procedure SetBlobData(Buffer: Pointer; ASize: Integer);
     Procedure SetData(Buffer: Pointer);
     Property AsBCD : Currency read GetAsCurrency write SetAsBCD;
-    Property AsBlob : TBlobData read GetAsBytes write SetAsBlobData;
+    Property AsBlob : TBlobData read GetAsBytes write SetAsBlob;
     Property AsBoolean : Boolean read GetAsBoolean write SetAsBoolean;
     Property AsBytes : TBytes read GetAsBytes write SetAsBytes;
     Property AsCurrency : Currency read GetAsCurrency write SetAsCurrency;
diff --git a/packages/fcl-db/src/base/dsparams.inc b/packages/fcl-db/src/base/dsparams.inc
index 38a9fdc758..d6d44d98e8 100644
--- a/packages/fcl-db/src/base/dsparams.inc
+++ b/packages/fcl-db/src/base/dsparams.inc
@@ -593,7 +593,7 @@ var P: Pointer;
 begin
   If IsNull then
     Result:=''
-  else if (FDataType in [ftBytes, ftVarBytes]) and VarIsArray(FValue) then
+  else if (FDataType in [ftBytes, ftVarBytes, ftBlob]) and VarIsArray(FValue) then
   begin
     SetLength(Result, (VarArrayHighBound(FValue, 1) + 1) div SizeOf(Char));
     P := VarArrayLock(FValue);
@@ -700,12 +700,6 @@ begin
   Value:=AValue;
 end;
 
-procedure TParam.SetAsBlobData(const AValue: TBlobData);
-begin
-  FDataType:=ftBlob;
-  Value:=AValue;
-end;
-
 Procedure TParam.SetAsCurrency(const AValue: Currency);
 begin
   FDataType:=ftCurrency;
@@ -887,7 +881,7 @@ begin
     AssignParam(TParam(Source))
   else if (Source is TField) then
     AssignField(TField(Source))
-  else if (source is TStrings) then
+  else if (Source is TStrings) then
     AsMemo:=TStrings(Source).Text
   else
     inherited Assign(Source);
@@ -1120,7 +1114,6 @@ begin
     DatabaseErrorFmt(SBadParamFieldType,[Name],DataSet);
   end;
 
-
 end;
 
 Procedure TParam.LoadFromFile(const FileName: string; BlobType: TBlobType);