diff --git a/source/dbconnection.pas b/source/dbconnection.pas
index 0713ab18..0301eb2f 100644
--- a/source/dbconnection.pas
+++ b/source/dbconnection.pas
@@ -428,7 +428,8 @@ type
     spUSEQuery, spKillQuery, spKillProcess,
     spFuncLength, spFuncCeil, spFuncLeft, spFuncNow, spFuncLastAutoIncNumber,
     spLockedTables, spDisableForeignKeyChecks, spEnableForeignKeyChecks,
-    spOrderAsc, spOrderDesc);
+    spOrderAsc, spOrderDesc,
+    spForeignKeyDrop);
 
   TDBConnection = class(TComponent)
     private
@@ -3081,6 +3082,7 @@ begin
       FSQLSpecifities[spLockedTables] := '';
       FSQLSpecifities[spDisableForeignKeyChecks] := 'SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0';
       FSQLSpecifities[spEnableForeignKeyChecks] := 'SET FOREIGN_KEY_CHECKS=IFNULL(@OLD_FOREIGN_KEY_CHECKS, 1)';
+      FSQLSpecifities[spForeignKeyDrop] := 'DROP FOREIGN KEY %s';
     end;
     ngMSSQL: begin
       FSQLSpecifities[spDatabaseDrop] := 'DROP DATABASE %s';
@@ -3105,6 +3107,7 @@ begin
       FSQLSpecifities[spLockedTables] := '';
       FSQLSpecifities[spDisableForeignKeyChecks] := '';
       FSQLSpecifities[spEnableForeignKeyChecks] := '';
+      FSQLSpecifities[spForeignKeyDrop] := 'DROP FOREIGN KEY %s';
     end;
     ngPgSQL: begin
       FSQLSpecifities[spDatabaseDrop] := 'DROP SCHEMA %s';
@@ -3131,6 +3134,7 @@ begin
       FSQLSpecifities[spLockedTables] := '';
       FSQLSpecifities[spDisableForeignKeyChecks] := '';
       FSQLSpecifities[spEnableForeignKeyChecks] := '';
+      FSQLSpecifities[spForeignKeyDrop] := 'DROP CONSTRAINT %s';
     end;
     ngSQLite: begin
       FSQLSpecifities[spDatabaseDrop] := 'DROP DATABASE %s';
@@ -3156,6 +3160,7 @@ begin
       FSQLSpecifities[spLockedTables] := '';
       FSQLSpecifities[spDisableForeignKeyChecks] := '';
       FSQLSpecifities[spEnableForeignKeyChecks] := '';
+      FSQLSpecifities[spForeignKeyDrop] := 'DROP FOREIGN KEY %s';
     end;
     ngInterbase: begin
       FSQLSpecifities[spDatabaseDrop] := 'DROP DATABASE %s';
@@ -3184,6 +3189,7 @@ begin
       FSQLSpecifities[spLockedTables] := '';
       FSQLSpecifities[spDisableForeignKeyChecks] := '';
       FSQLSpecifities[spEnableForeignKeyChecks] := '';
+      FSQLSpecifities[spForeignKeyDrop] := 'DROP FOREIGN KEY %s';
     end;
 
   end;
diff --git a/source/table_editor.pas b/source/table_editor.pas
index 70ef6b60..1786f3c0 100644
--- a/source/table_editor.pas
+++ b/source/table_editor.pas
@@ -600,7 +600,7 @@ begin
   //   ALTER TABLE  statement. Separate statements are required."
   for i:=0 to FForeignKeys.Count-1 do begin
     if FForeignKeys[i].Modified and (not FForeignKeys[i].Added) then
-      Specs.Add('DROP FOREIGN KEY '+Conn.QuoteIdent(FForeignKeys[i].OldKeyName));
+      Specs.Add(DBObject.Connection.GetSQLSpecifity(spForeignKeyDrop, [Conn.QuoteIdent(FForeignKeys[i].OldKeyName)]));
   end;
   FinishSpecs;
 
@@ -805,8 +805,9 @@ begin
       Specs.Add('ADD '+FKeys[i].SQLCode);
   end;
 
-  for i:=0 to FDeletedForeignKeys.Count-1 do
-    Specs.Add('DROP FOREIGN KEY '+Conn.QuoteIdent(FDeletedForeignKeys[i]));
+  for i:=0 to FDeletedForeignKeys.Count-1 do begin
+    Specs.Add(DBObject.Connection.GetSQLSpecifity(spForeignKeyDrop, [Conn.QuoteIdent(FDeletedForeignKeys[i])]));
+  end;
   for i:=0 to FForeignKeys.Count-1 do begin
     if FForeignKeys[i].Added or FForeignKeys[i].Modified then
       Specs.Add('ADD '+FForeignKeys[i].SQLCode(True));