diff --git a/libraries/PDM/src/stm32/PDM.cpp b/libraries/PDM/src/stm32/PDM.cpp
index 0ad5feea4..f8dce12d5 100644
--- a/libraries/PDM/src/stm32/PDM.cpp
+++ b/libraries/PDM/src/stm32/PDM.cpp
@@ -104,7 +104,7 @@ int PDMClass::read(void* buffer, size_t size)
     for (int i = 0; i < size; i++) {
       ((uint16_t*)buffer)[i] = temp[i*2];
     }
-    return read;
+    return read/2;
   }
   int read = _doubleBuffer.read(buffer, size);
   return read;
@@ -172,4 +172,4 @@ extern "C" {
 
 PDMClass PDM(0, 0, 0);
 
-#endif
\ No newline at end of file
+#endif