diff --git a/scripts/clang-format.sh b/scripts/clang-format.sh
old mode 100644
new mode 100755
diff --git a/src/listReaders.cpp b/src/listReaders.cpp
index 2be9138..013759f 100644
--- a/src/listReaders.cpp
+++ b/src/listReaders.cpp
@@ -75,6 +75,9 @@ std::vector<SCARD_READERSTATE> getReaderStates(const SCARDCONTEXT ctx, const str
                                 }});
     }
 
+    if (readerStates.empty())
+        return {};
+
     SCard(GetStatusChange, ctx, 0, readerStates.data(), DWORD(readerStates.size()));
 
     return readerStates;