diff --git a/main.go b/main.go
index 67e53fc..92f537c 100644
--- a/main.go
+++ b/main.go
@@ -355,7 +355,10 @@ func populateSubmission(submissionURL string, listPath *paths.Path) (submissionT
 // normalizeURL converts the URL into the standardized format used in the index.
 func normalizeURL(rawURL *url.URL) url.URL {
 	normalizedPath := strings.TrimRight(rawURL.Path, "/")
-	if !strings.HasSuffix(normalizedPath, ".git") {
+	if normalizedPath == "" {
+		// It doesn't make sense to add the extension to root URLs
+		normalizedPath = "/"
+	} else if !strings.HasSuffix(normalizedPath, ".git") {
 		normalizedPath += ".git"
 	}
 
@@ -392,11 +395,15 @@ func uRLIsUnder(childURL url.URL, parentCandidates []string) bool {
 			panic(err)
 		}
 
-		isUnderPath, err := paths.New(childURL.Path).IsInsideDir(paths.New(parentCandidateURL.Path))
+		childURLPath := paths.New(childURL.Path)
+		candidateURLPath := paths.New(parentCandidateURL.Path)
+
+		isUnderPath, err := childURLPath.IsInsideDir(candidateURLPath)
 		if err != nil {
 			panic(err)
 		}
-		if (childURL.Host == parentCandidateURL.Host) && isUnderPath {
+
+		if (childURL.Host == parentCandidateURL.Host) && (childURLPath.EqualsTo(candidateURLPath) || isUnderPath) {
 			return true
 		}
 	}
diff --git a/main_test.go b/main_test.go
index 0d4fd34..70afe02 100644
--- a/main_test.go
+++ b/main_test.go
@@ -158,6 +158,8 @@ func Test_normalizeURL(t *testing.T) {
 		{".git suffix", "https://github.com/foo/bar.git", "https://github.com/foo/bar.git"},
 		{"http://", "http://github.com/foo/bar", "https://github.com/foo/bar.git"},
 		{"git://", "git://github.com/foo/bar", "https://github.com/foo/bar.git"},
+		{"Root URL", "https://github.com", "https://github.com/"},
+		{"Root URL with trailing slash", "https://github.com/", "https://github.com/"},
 	}
 
 	for _, testTable := range testTables {
@@ -196,6 +198,8 @@ func Test_uRLIsUnder(t *testing.T) {
 		{"Mismatch, root path", "https://github.com/foo/bar", []string{"example.com", "example.org"}, assert.False},
 		{"Match, subfolder", "https://github.com/foo/bar", []string{"example.com/foo", "github.com/foo"}, assert.True},
 		{"Mismatch, subfolder", "https://github.com/foo/bar", []string{"example.com/foo", "github.org/bar"}, assert.False},
+		{"Match, root child URL", "https://github.com/", []string{"example.com", "github.com"}, assert.True},
+		{"Mismatch, root child URL", "https://github.com/", []string{"example.com", "github.org"}, assert.False},
 	}
 
 	for _, testTable := range testTables {