diff --git a/src/openrct2-ui/UiContext.Linux.cpp b/src/openrct2-ui/UiContext.Linux.cpp
index dc5aea4315..4ea06f0b0f 100644
--- a/src/openrct2-ui/UiContext.Linux.cpp
+++ b/src/openrct2-ui/UiContext.Linux.cpp
@@ -133,6 +133,7 @@ namespace OpenRCT2::Ui
         {
             std::string result;
             std::string executablePath;
+            u8string directory = EscapePathForShell(desc.InitialDirectory + '/');
             DIALOG_TYPE dtype = GetDialogApp(&executablePath);
             switch (dtype)
             {
@@ -141,8 +142,8 @@ namespace OpenRCT2::Ui
                     std::string action = (desc.Type == FileDialogType::Open) ? "--getopenfilename" : "--getsavefilename";
                     std::string filter = GetKDialogFilterString(desc.Filters);
                     std::string cmd = String::StdFormat(
-                        "%s --title '%s' %s '%s' '%s'", executablePath.c_str(), desc.Title.c_str(), action.c_str(),
-                        desc.InitialDirectory.c_str(), filter.c_str());
+                        "%s --title '%s' %s %s '%s'", executablePath.c_str(), desc.Title.c_str(), action.c_str(),
+                        directory.c_str(), filter.c_str());
                     std::string output;
                     if (Platform::Execute(cmd, &output) == 0)
                     {
@@ -160,8 +161,8 @@ namespace OpenRCT2::Ui
                     }
                     std::string filters = GetZenityFilterString(desc.Filters);
                     std::string cmd = String::StdFormat(
-                        "%s %s --filename='%s/' %s --title='%s' / %s", executablePath.c_str(), action.c_str(),
-                        desc.InitialDirectory.c_str(), flags.c_str(), desc.Title.c_str(), filters.c_str());
+                        "%s %s --filename=%s %s --title='%s' / %s", executablePath.c_str(), action.c_str(), directory.c_str(),
+                        flags.c_str(), desc.Title.c_str(), filters.c_str());
                     std::string output;
                     if (Platform::Execute(cmd, &output) == 0)
                     {