diff --git a/simgear/scene/tsync/terrasync.cxx b/simgear/scene/tsync/terrasync.cxx
index 24b99b8b..24996cb8 100644
--- a/simgear/scene/tsync/terrasync.cxx
+++ b/simgear/scene/tsync/terrasync.cxx
@@ -1362,14 +1362,18 @@ void SGTerraSync::setSceneryPathSuffixes(const string_list& suffixes)
 }
 
 bool SGTerraSync::isTileDirPending(const std::string& sceneryDir) const
+{
+    return innerIsTileDirPending(sceneryDir, false);
+}
+
+bool SGTerraSync::innerIsTileDirPending(const std::string& sceneryDir, bool isOSM) const
 {
     if (!_workerThread->isRunning()) {
         return false;
     }
 
     for (const auto& suffix : _sceneryPathSuffixes) {
-        // don't wait on OSM dirs, even if enabled
-        if (isOSMSuffix(suffix)) {
+        if (isOSM != isOSMSuffix(suffix)) {
             continue;
         }
 
@@ -1382,6 +1386,11 @@ bool SGTerraSync::isTileDirPending(const std::string& sceneryDir) const
     return false;
 }
 
+bool SGTerraSync::isTileDirPendingOSM(const std::string& sceneryDir) const
+{
+    return innerIsTileDirPending(sceneryDir, true);
+}
+
 void SGTerraSync::scheduleDataDir(const std::string& dataDir)
 {
     if (!_workerThread->isRunning()) {
diff --git a/simgear/scene/tsync/terrasync.hxx b/simgear/scene/tsync/terrasync.hxx
index a48091f1..c7ee24a9 100644
--- a/simgear/scene/tsync/terrasync.hxx
+++ b/simgear/scene/tsync/terrasync.hxx
@@ -81,6 +81,7 @@ public:
      */
     bool isTileDirPending(const std::string& sceneryDir) const;
 
+    bool isTileDirPendingOSM(const std::string& sceneryDir) const;
 
     void scheduleDataDir(const std::string& dataDir);
 
@@ -94,6 +95,8 @@ protected:
 private:
     void writeWarningFile(const SGPath& sceneryDir);
 
+    bool innerIsTileDirPending(const std::string& sceneryDir, bool isOSM) const;
+
 private:
     WorkerThread* _workerThread;
     SGPropertyNode_ptr _terraRoot;