diff --git a/solid.theme b/solid.theme
index 678690e..75f9bfa 100644
--- a/solid.theme
+++ b/solid.theme
@@ -1,5 +1,10 @@
 _lp_solid_theme_activate() {
 
+    if ! _lp_version_greatereq 2 2 0 ; then
+        _lp_join "." ${_LP_VERSION[@]}
+        printf "WARNING: the Solid theme requires Liquid Prompt >= 2.2.0, but you have version $lp_join, some features will not work and the prompt may crash.\n"
+    fi
+
     local lp_terminal_format
     lp_terminal_format 63 -1 0 0 4 0
     SP_COLOR_BASE="$lp_terminal_format"