diff --git a/kernel/chips/it87.c b/kernel/chips/it87.c
index b5891e2a..28a84ca1 100644
--- a/kernel/chips/it87.c
+++ b/kernel/chips/it87.c
@@ -517,9 +517,8 @@ int it87_detach_client(struct i2c_client *client)
 		return err;
 	}
 
-	if i2c_is_isa_client
-		(client)
-		    release_region(client->addr, IT87_EXTENT);
+	if(i2c_is_isa_client(client))
+		release_region(client->addr, IT87_EXTENT);
 	kfree(client);
 
 	return 0;
diff --git a/kernel/chips/lm78.c b/kernel/chips/lm78.c
index 4c2a243d..e4887d79 100644
--- a/kernel/chips/lm78.c
+++ b/kernel/chips/lm78.c
@@ -478,9 +478,8 @@ int lm78_detach_client(struct i2c_client *client)
 		return err;
 	}
 
-	if i2c_is_isa_client
-		(client)
-		    release_region(client->addr, LM78_EXTENT);
+	if(i2c_is_isa_client(client))
+		release_region(client->addr, LM78_EXTENT);
 	kfree(client);
 
 	return 0;
diff --git a/kernel/chips/w83781d.c b/kernel/chips/w83781d.c
index 8b1d61c8..5d607efb 100644
--- a/kernel/chips/w83781d.c
+++ b/kernel/chips/w83781d.c
@@ -983,10 +983,9 @@ int w83781d_detach_client(struct i2c_client *client)
 		return err;
 	}
 
-	if i2c_is_isa_client
-		(client)
-		    release_region(client->addr, W83781D_EXTENT);
-	else {
+	if(i2c_is_isa_client(client)) {
+		release_region(client->addr, W83781D_EXTENT);
+	} else {
 		i2c_detach_client(&
 				  (((struct
 				     w83781d_data *) (client->data))->