diff --git a/src/emu/diimage.cpp b/src/emu/diimage.cpp
index 8a38739933a..d8235569d1d 100644
--- a/src/emu/diimage.cpp
+++ b/src/emu/diimage.cpp
@@ -195,7 +195,7 @@ void device_image_interface::set_image_filename(const std::string &filename)
 	auto iter = std::find_if(
 		m_image_name.rbegin(),
 		m_image_name.rend(),
-		[](char c) { return (c == '\\') || (c == '/') || (c == ':'); });
+		[](char c) { return (c == '\\') || (c == '/'); });
 
 	if (iter != m_image_name.rend())
 		m_basename.assign(iter.base(), m_image_name.end());