diff --git a/community/currency-cbr-search.lua b/community/currency-cbr-search.lua
index 6b6ec6e..2698919 100644
--- a/community/currency-cbr-search.lua
+++ b/community/currency-cbr-search.lua
@@ -21,6 +21,8 @@ local val = 0
 function on_search(inp)
 	val = 0
 	local c,d,m,y = inp:match("^(%a%a%a)%s?(%d?%d?)%s?(%d?%d?)%s?(%d?%d?%d?%d?)$")
+    if c == nil then return end
+
 	cur = c:upper()
 	local t = os.date("*t")
 	if d == "" then
@@ -65,4 +67,4 @@ end
 function on_long_click()
 	system:copy_to_clipboard(val)
 	return true
-end
\ No newline at end of file
+end