diff --git a/include/core/parseutil.h b/include/core/parseutil.h
index 96d56c27..5cb07366 100644
--- a/include/core/parseutil.h
+++ b/include/core/parseutil.h
@@ -71,7 +71,7 @@ public:
     static QString removeLineComments(QString text, const QStringList &commentSymbols);
 
     static QStringList splitShellCommand(QStringView command);
-    static bool gameStringToBool(QString gameString);
+    static bool gameStringToBool(QString gameString, bool * ok = nullptr);
 
 private:
     QString root;
diff --git a/include/project.h b/include/project.h
index 59f7a798..0828284f 100644
--- a/include/project.h
+++ b/include/project.h
@@ -167,6 +167,8 @@ public:
 
     QString defaultSong;
     QStringList getVisibilities();
+    void insertTilesetLabel(QString label, bool isSecondary);
+    void insertTilesetLabel(QString label, QString isSecondaryStr);
     bool readTilesetLabels();
     bool readTilesetProperties();
     bool readMaxMapDataSize();
diff --git a/src/core/parseutil.cpp b/src/core/parseutil.cpp
index 485154bc..63fbd84d 100644
--- a/src/core/parseutil.cpp
+++ b/src/core/parseutil.cpp
@@ -402,15 +402,13 @@ QMap<QString, QString> ParseUtil::readNamedIndexCArray(const QString &filename,
     return map;
 }
 
-bool ParseUtil::gameStringToBool(QString gameString) {
+bool ParseUtil::gameStringToBool(QString gameString, bool * ok) {
+    if (ok) *ok = true;
     if (QString::compare(gameString, "TRUE", Qt::CaseInsensitive) == 0)
         return true;
     if (QString::compare(gameString, "FALSE", Qt::CaseInsensitive) == 0)
         return false;
-    bool ok;
-    int num = gameString.toInt(&ok);
-    if (!ok) logWarn(QString("Unable to convert string '%1' to bool, will be interpreted as 'FALSE'").arg(gameString));
-    return num != 0;
+    return gameString.toInt(ok) != 0;
 }
 
 QMap<QString, QHash<QString, QString>> ParseUtil::readCStructs(const QString &filename, const QString &label, const QHash<int, QString> memberMap) {
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index d930ed77..c9406d30 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1342,13 +1342,10 @@ void MainWindow::on_actionNew_Tileset_triggered() {
 
         if(!createTilesetDialog->isSecondary) {
             this->ui->comboBox_PrimaryTileset->addItem(createTilesetDialog->fullSymbolName);
-            editor->project->tilesetLabels["primary"].append(createTilesetDialog->fullSymbolName);
-
         } else {
             this->ui->comboBox_SecondaryTileset->addItem(createTilesetDialog->fullSymbolName);
-            editor->project->tilesetLabels["secondary"].append(createTilesetDialog->fullSymbolName);
         }
-        editor->project->tilesetLabelsOrdered.append(createTilesetDialog->fullSymbolName);
+        editor->project->insertTilesetLabel(createTilesetDialog->fullSymbolName, createTilesetDialog->isSecondary);
 
         QMessageBox msgBox(this);
         msgBox.setText("Successfully created tileset.");
diff --git a/src/project.cpp b/src/project.cpp
index 8cd96c34..55243012 100644
--- a/src/project.cpp
+++ b/src/project.cpp
@@ -1930,6 +1930,22 @@ Project::DataQualifiers Project::getDataQualifiers(QString text, QString label)
     return qualifiers;
 }
 
+void Project::insertTilesetLabel(QString label, bool isSecondary) {
+    QString category = isSecondary ? "secondary" : "primary";
+    this->tilesetLabels[category].append(label);
+    this->tilesetLabelsOrdered.append(label);
+}
+
+void Project::insertTilesetLabel(QString label, QString isSecondaryStr) {
+    bool ok;
+    bool isSecondary = ParseUtil::gameStringToBool(isSecondaryStr, &ok);
+    if (!ok) {
+        logError(QString("Unable to convert value '%1' of isSecondary to bool for tileset %2.").arg(isSecondaryStr).arg(label));
+        return;
+    }
+    insertTilesetLabel(label, isSecondary);
+}
+
 bool Project::readTilesetLabels() {
     QStringList primaryTilesets;
     QStringList secondaryTilesets;
@@ -1953,25 +1969,16 @@ bool Project::readTilesetLabels() {
         QRegularExpressionMatchIterator iter = re.globalMatch(text);
         while (iter.hasNext()) {
             QRegularExpressionMatch match = iter.next();
-            QString tilesetLabel = match.captured("label");
-            if (ParseUtil::gameStringToBool(match.captured("isSecondary")))
-                this->tilesetLabels["secondary"].append(tilesetLabel);
-            else
-                this->tilesetLabels["primary"].append(tilesetLabel);
-            this->tilesetLabelsOrdered.append(tilesetLabel);
+            insertTilesetLabel(match.captured("label"), match.captured("isSecondary"));
         }
         filename = asm_filename; // For error reporting further down
     } else {
         this->usingAsmTilesets = false;
         const auto structs = parser.readCStructs(filename, "", Tileset::getHeaderMemberMap(this->usingAsmTilesets));
         QStringList labels = structs.keys();
-        for (const auto tilesetLabel : labels) {
-            if (tilesetLabel.isEmpty()) continue;
-            if (ParseUtil::gameStringToBool(structs[tilesetLabel].value("isSecondary")))
-                this->tilesetLabels["secondary"].append(tilesetLabel);
-            else
-                this->tilesetLabels["primary"].append(tilesetLabel);
-            this->tilesetLabelsOrdered.append(tilesetLabel); // TODO: This is alphabetical, AdvanceMap import wants the vanilla order
+        // TODO: This is alphabetical, AdvanceMap import wants the vanilla order in tilesetLabelsOrdered
+        for (const auto tilesetLabel : labels){
+            insertTilesetLabel(tilesetLabel, structs[tilesetLabel].value("isSecondary"));
         }
     }