diff --git a/host/platform/Windows/src/force_compose.c b/host/platform/Windows/src/force_compose.c
index aeab72d6..2cf99dba 100644
--- a/host/platform/Windows/src/force_compose.c
+++ b/host/platform/Windows/src/force_compose.c
@@ -106,6 +106,7 @@ static DWORD WINAPI threadProc(LPVOID lParam)
         }
         break;
       default:
+        DEBUG_ERROR("MsgWaitForMultipleObjects failed: 0x%lx", GetLastError());
         goto exit;
     }
   }
diff --git a/host/platform/Windows/src/mousehook.c b/host/platform/Windows/src/mousehook.c
index 1617ea1d..809e28d4 100644
--- a/host/platform/Windows/src/mousehook.c
+++ b/host/platform/Windows/src/mousehook.c
@@ -151,6 +151,7 @@ static DWORD WINAPI threadProc(LPVOID lParam) {
         }
         break;
       default:
+        DEBUG_ERROR("MsgWaitForMultipleObjects failed: 0x%lx", GetLastError());
         goto exit;
     }
   }