diff --git a/src/core/util_buffers.h b/src/core/util_buffers.h
index c7d0be688..7b095670b 100644
--- a/src/core/util_buffers.h
+++ b/src/core/util_buffers.h
@@ -343,7 +343,7 @@ class FastCircularBuffer
 
 //-----------------------------------------------------------------------------
 // name: FinalRingBuffer
-// desc: hopefully this will the last lock-free queue we need to implement...
+// desc: hopefully this will be the last lock-free queue we need to implement...
 //       hopefully not like FinalFantasy which has sequels
 //
 // added 1.5.2.5 (ge) | adapted from:
diff --git a/src/core/util_serial.cpp b/src/core/util_serial.cpp
index 917973421..f69798315 100644
--- a/src/core/util_serial.cpp
+++ b/src/core/util_serial.cpp
@@ -258,12 +258,15 @@ vector<string> SerialIOManager::availableSerialDevices()
 }
 
 
-#else // ? e.g. iPhone
+#else // ? e.g., iPhone
 
-vector<string> SerialIOManager::availableSerialDevices()
-{
-    vector<string> devices;
 
+// for compatibility | 1.5.2.5 (ge & eito) added std::
+std::vector<std::string> SerialIOManager::availableSerialDevices()
+{
+    // vector of devices
+    std::vector<std::string> devices;
+    // return empty list
     return devices;
 }