@@ -6,26 +6,25 @@
 
 OF_ASSUME_NONNULL_BEGIN
 
 @interface PGConnection: OFObject
 {
-	PGconn *_connnection;
+	PGconn *_connection;
 	OFDictionary OF_GENERIC(OFString *, OFString *) *_parameters;
 }
 
 @property (nonatomic, copy)
     OFDictionary OF_GENERIC(OFString *, OFString *) *parameters;
 
 - (void)connect;
 - (void)reset;
 - (void)close;
-- (PGResult *)executeCommand: (OFConstantString *)command;
-- (PGResult *)executeCommand: (OFConstantString *)command
+- (nullable PGResult *)executeCommand: (OFConstantString *)command;
+- (nullable PGResult *)executeCommand: (OFConstantString *)command
 		  parameters: (id)firstParameter, ... OF_SENTINEL;
-- (PGconn *)PG_connection;
 - (void)insertRow: (OFDictionary *)row
 	intoTable: (OFString *)table;
 - (void)insertRows: (OFArray OF_GENERIC(OFDictionary *) *)rows
 	 intoTable: (OFString *)table;
 @end
 
 OF_ASSUME_NONNULL_END