diff --git a/Makefile b/Makefile
index d5f1822600..f081f47840 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ ifeq ($(BUILD_TYPE),release)
 else ifeq ($(BUILD_TYPE),debug)
 	PG_CONFIGURE_OPTS = --enable-debug --with-openssl --enable-cassert --enable-depend
 	PG_CFLAGS = -O0 -g3 $(CFLAGS)
-	CPPFLAGS = -fsanitize=address -fsanitize=undefined -fno-sanitize-recover -fno-sanitize=function -fno-sanitize=alignment -Wno-cast-function-type-strict
+	CPPFLAGS = -fsanitize=address -fsanitize=undefined -fno-sanitize-recover -fno-sanitize=alignment -Wno-cast-function-type-strict
 	LDFLAGS = -fsanitize=address -fsanitize=undefined -static-libubsan -static-libasan
 else
 	$(error Bad build type '$(BUILD_TYPE)', see Makefile for options)