diff --git a/src/gui/wxgui/debugger/DumpCtrl.cpp b/src/gui/wxgui/debugger/DumpCtrl.cpp
index 3e8565b5..619f0cfa 100644
--- a/src/gui/wxgui/debugger/DumpCtrl.cpp
+++ b/src/gui/wxgui/debugger/DumpCtrl.cpp
@@ -431,6 +431,9 @@ bool DumpCtrl::WriteString(uint32 address)
 
 	std::string text = dialog.GetValue().ToStdString();
 
+	if (text.empty())
+		return false;
+
     for (size_t i = 0; i < text.size(); i++)
         memory_writeU8(address + i, static_cast<uint8>(text[i]));