diff --git a/plugins/gpgme-vala/src/gpgme_helper.vala b/plugins/gpgme-vala/src/gpgme_helper.vala
index 3f42bb51..ee4d0095 100644
--- a/plugins/gpgme-vala/src/gpgme_helper.vala
+++ b/plugins/gpgme-vala/src/gpgme_helper.vala
@@ -177,7 +177,11 @@ private static uint8[] get_uint8_from_data(Data data) {
 private static void initialize() {
     if (!initialized) {
 #if _WIN32
-        set_global_flag("w32-inst-dir", "C://Program Files (x86)//GnuPG//bin");
+        string gpg = GLib.Environment.find_program_in_path("gpg.exe");
+        if (gpg != null && gpg.length > 0)
+        {
+            set_global_flag("w32-inst-dir", GLib.Path.get_dirname(gpg));
+        }
 #endif
         check_version();
         initialized = true;