diff --git a/server.go b/server.go
index 7c8ad5e..f742b0d 100644
--- a/server.go
+++ b/server.go
@@ -105,27 +105,27 @@ func executeQuery(rw http.ResponseWriter, req *http.Request) {
 }
 
 func getCategories(rw http.ResponseWriter, req *http.Request) {
-	rows, err := db.Query("SELECT description, id FROM categories")
+	categoryRows, err := db.Query("SELECT description, id FROM categories")
 	if err != nil {
 		log.Fatal(err)
 	}
-	defer rows.Close()
+	defer categoryRows.Close()
 
 	var categories []jsonCategory
-	for rows.Next() {
+	for categoryRows.Next() {
 		var (
 			description string
 			id          int
 		)
 
-		if err := rows.Scan(&description, &id); err != nil {
+		if err := categoryRows.Scan(&description, &id); err != nil {
 			log.Fatal(err)
 		}
 
 		categories = append(categories, jsonCategory{description, id})
 	}
 
-	if err := rows.Err(); err != nil {
+	if err := categoryRows.Err(); err != nil {
 		log.Fatal(err)
 	}
 
@@ -209,10 +209,10 @@ func accessReview(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	reviewRows := db.QueryRow("SELECT url FROM reviews WHERE id = (?) LIMIT 1", request.Id)
+	reviewRow := db.QueryRow("SELECT url FROM reviews WHERE id = (?) LIMIT 1", request.Id)
 
 	var reply jsonAccessReply
-	if err := reviewRows.Scan(&reply.Url); err == nil {
+	if err := reviewRow.Scan(&reply.Url); err == nil {
 		reply.Url = "http://www.tripadvisor.com" + reply.Url
 		reply.Success = true
 	}
diff --git a/static/scripts/profile.js b/static/scripts/profile.js
index cf1d8ea..60131e3 100644
--- a/static/scripts/profile.js
+++ b/static/scripts/profile.js
@@ -65,7 +65,7 @@
         $('#categories').append($(template({categories: categories})).hide().fadeIn());
 
         $('#categories input:radio').unbind().change(function() {
-            setProfileValue($(this).attr('data-categoryId'), this.value);
+            setProfileValue(parseInt($(this).attr('data-categoryId'), this.value));
         });
 
         $('#categories button').unbind().click(function() {
diff --git a/util.go b/util.go
index 99cd11f..3342d11 100644
--- a/util.go
+++ b/util.go
@@ -159,6 +159,7 @@ func computeRecordPopularity(entries records, context queryContext) {
 		if err != nil {
 			log.Fatal(err)
 		}
+		defer historyRows.Close()
 
 		var groupSum float64
 		var groupCount int
@@ -173,6 +174,7 @@ func computeRecordPopularity(entries records, context queryContext) {
 			if err != nil {
 				log.Fatal(err)
 			}
+			defer groupRows.Close()
 
 			recordProfile := make(featureMap)
 			for groupRows.Next() {
@@ -203,18 +205,19 @@ func computeRecordPopularity(entries records, context queryContext) {
 }
 
 func getRecords(context queryContext) records {
-	rows, err := db.Query("SELECT name, url, delicious, accomodating, affordable, atmospheric, latitude, longitude, distanceToStn, closestStn, accessCount, id FROM reviews")
+	recordRows, err := db.Query("SELECT name, url, delicious, accomodating, affordable, atmospheric, latitude, longitude, distanceToStn, closestStn, accessCount, id FROM reviews")
 	if err != nil {
 		log.Fatal(err)
 	}
+	defer recordRows.Close()
 
 	var entries []record
-	for rows.Next() {
+	for recordRows.Next() {
 		var name, url, closestStn string
 		var delicious, accomodating, affordable, atmospheric, latitude, longitude, distanceToStn float64
 		var accessCount, id int
 
-		rows.Scan(
+		recordRows.Scan(
 			&name,
 			&url,
 			&delicious,
@@ -245,7 +248,7 @@ func getRecords(context queryContext) records {
 
 		entries = append(entries, entry)
 	}
-	if err := rows.Err(); err != nil {
+	if err := recordRows.Err(); err != nil {
 		log.Fatal(err)
 	}