--- a/src/lib/fcitx-utils/standardpath.cpp
+++ b/src/lib/fcitx-utils/standardpath.cpp
@@ -113,7 +113,7 @@
         pkgconfigHome_ =
             defaultPath((isFcitx ? "FCITX_CONFIG_HOME" : nullptr),
                         constructPath(configHome_, packageName).c_str());
-        configDirs_ = defaultPaths("XDG_CONFIG_DIRS", "/etc/xdg",
+        configDirs_ = defaultPaths("XDG_CONFIG_DIRS", "@TERMUX_PREFIX@/etc/xdg",
                                    builtInPathMap, nullptr);
         auto pkgconfigDirFallback = configDirs_;
         for (auto &path : pkgconfigDirFallback) {
@@ -128,7 +128,7 @@
         pkgdataHome_ =
             defaultPath((isFcitx ? "FCITX_DATA_HOME" : nullptr),
                         constructPath(dataHome_, packageName).c_str());
-        dataDirs_ = defaultPaths("XDG_DATA_DIRS", "/usr/local/share:/usr/share",
+        dataDirs_ = defaultPaths("XDG_DATA_DIRS", "@TERMUX_PREFIX@/local/share:@TERMUX_PREFIX@/share",
                                  builtInPathMap,
                                  skipBuiltInPath_ ? nullptr : "datadir");
         auto pkgdataDirFallback = dataDirs_;
@@ -143,7 +143,7 @@
         auto tmpdir = getEnvironment("TMPDIR");
         runtimeDir_ =
             defaultPath("XDG_RUNTIME_DIR",
-                        (!tmpdir || tmpdir->empty()) ? "/tmp" : tmpdir->data());
+                        (!tmpdir || tmpdir->empty()) ? "@TERMUX_PREFIX@/tmp" : tmpdir->data());
         // Though theoratically, this is also fcitxPath, we just simply don't
         // use it here.
         addonDirs_ = defaultPaths("FCITX_ADDON_DIRS", FCITX_INSTALL_ADDONDIR,
--- a/src/lib/fcitx/icontheme.cpp
+++ b/src/lib/fcitx/icontheme.cpp
@@ -887,7 +887,7 @@
             std::vector<std::filesystem::path> files = {
                 std::filesystem::path(*home) / ".kde4/share/config/kdeglobals",
                 std::filesystem::path(*home) / ".kde/share/config/kdeglobals",
-                "/etc/kde4/kdeglobals"};
+                "@TERMUX_PREFIX@/etc/kde4/kdeglobals"};
             for (auto &file : files) {
                 auto fd = StandardPaths::openPath(file);
                 auto theme = getKdeTheme(fd.fd());
@@ -907,7 +907,7 @@
                 return theme;
             }
         }
-        auto theme = getGtkTheme("/etc/gtk-3.0/settings.ini");
+        auto theme = getGtkTheme("@TERMUX_PREFIX@/etc/gtk-3.0/settings.ini");
         if (!theme.empty()) {
             return theme;
         }
@@ -915,7 +915,7 @@
         if (home && !home->empty()) {
             std::vector<std::filesystem::path> files = {
                 std::filesystem::path(*home) / ".gtkrc-2.0",
-                "/etc/gtk-2.0/gtkrc"};
+                "@TERMUX_PREFIX@/etc/gtk-2.0/gtkrc"};
             for (auto &file : files) {
                 auto theme = getGtkTheme(file);
                 if (!theme.empty()) {
--- a/src/lib/fcitx/misc_p.h
+++ b/src/lib/fcitx/misc_p.h
@@ -101,9 +101,9 @@
 }
 
 static inline std::string getLocalMachineId(const std::string &fallback = {}) {
-    auto content = readFileContent("/var/lib/dbus/machine-id");
+    auto content = readFileContent("@TERMUX_PREFIX@/var/lib/dbus/machine-id");
     if (content.empty()) {
-        content = readFileContent("/etc/machine-id");
+        content = readFileContent("@TERMUX_PREFIX@/etc/machine-id");
     }
 
     return content.empty() ? fallback : content;