diff --git a/qt-ui/subsurfacewebservices.cpp b/qt-ui/subsurfacewebservices.cpp
index 565dc3fc7..6fa0b0afe 100644
--- a/qt-ui/subsurfacewebservices.cpp
+++ b/qt-ui/subsurfacewebservices.cpp
@@ -124,7 +124,7 @@ bool DivelogsDeWebServices::prepare_dives_for_divelogs(const QString &tempfile,
 
 
 	int error_code;
-	zip = zip_open(QFile::encodeName(tempfile), ZIP_CREATE, &error_code);
+	zip = zip_open(QFile::encodeName(QDir::toNativeSeparators(tempfile)), ZIP_CREATE, &error_code);
 	if (!zip) {
 		char buffer[1024];
 		zip_error_to_str(buffer, sizeof buffer, error_code, errno);