diff --git a/src/capwap/radio.h b/src/capwap/radio.h
index 952e9433..75885582 100644
--- a/src/capwap/radio.h
+++ b/src/capwap/radio.h
@@ -14,6 +14,7 @@ extern const char CW_RADIO_REG_DOMAIN[];
 extern const char CW_RADIO_BSSID[];
 extern const char CW_RADIO_SHORT_PREAMBLE[];
 extern const char CW_RADIO_COUNTRY_STRING[];
+extern const char CW_RADIO_DECRYPTION_ERROR_REPORT_PERIOD[];
 
 /* Cisco */