diff --git a/package/sofia-sip/sofia-sip.mk b/package/sofia-sip/sofia-sip.mk
index 5c383400ff..274c72fce8 100644
--- a/package/sofia-sip/sofia-sip.mk
+++ b/package/sofia-sip/sofia-sip.mk
@@ -30,7 +30,7 @@ SOFIA_SIP_CONF_OPTS += \
 	--without-openssl
 endif
 
-ifeq ($(BR2_ENABLE_DEBUG),y)
+ifeq ($(BR2_ENABLE_DEBUG),)
 SOFIA_SIP_CONF_OPTS += --enable-ndebug
 endif