diff --git a/package/rtl_433/rtl_433.mk b/package/rtl_433/rtl_433.mk
index e6d28721fa..df00c09518 100644
--- a/package/rtl_433/rtl_433.mk
+++ b/package/rtl_433/rtl_433.mk
@@ -9,7 +9,9 @@ RTL_433_SITE = $(call github,merbanan,rtl_433,$(RTL_433_VERSION))
 RTL_433_LICENSE = GPL-2.0+
 RTL_433_LICENSE_FILES = COPYING
 
+# Force Release build to remove ASAN.
 RTL_433_CONF_OPTS = \
+	-DCMAKE_BUILD_TYPE=Release \
 	-DBUILD_DOCUMENTATION=OFF \
 	-DBUILD_TESTING=OFF \
 	-DBUILD_TESTING_ANALYZER=OFF \