diff --git a/libc/str/getutf16.ncabi.c b/libc/str/getutf16.ncabi.c
index 2dfaa934..69b84753 100644
--- a/libc/str/getutf16.ncabi.c
+++ b/libc/str/getutf16.ncabi.c
@@ -35,7 +35,7 @@ forcealignargpointer unsigned(getutf16)(const char16_t *p, wint_t *wc) {
   if (IsUcs2(p[skip])) {
     *wc = p[skip];
     return skip + 1;
-  } else if (IsUtf16Cont(p[skip + 1])) {
+  } else if (!IsUtf16Cont(p[skip + 1])) {
     *wc = INVALID_CODEPOINT;
     return -1;
   } else {
diff --git a/libc/str/utf16.h b/libc/str/utf16.h
index 0827a205..b3ed77c1 100644
--- a/libc/str/utf16.h
+++ b/libc/str/utf16.h
@@ -6,7 +6,7 @@
 #define UTF16_CONT 0xdc00 /* 0xDC00..0xDBFF */
 
 #define IsUcs2(wc)         (((wc)&UTF16_MASK) != UTF16_MOAR)
-#define IsUtf16Cont(wc)    (((wc)&UTF16_MASK) != UTF16_MOAR)
+#define IsUtf16Cont(wc)    (((wc)&UTF16_MASK) == UTF16_CONT)
 #define MergeUtf16(lo, hi) ((((lo)-0xD800) << 10) + ((hi)-0xDC00) + 0x10000)
 
 #endif /* COSMOPOLITAN_LIBC_STR_UTF16_H_ */
diff --git a/net/http/http.mk b/net/http/http.mk
index 80d9e860..0572727c 100644
--- a/net/http/http.mk
+++ b/net/http/http.mk
@@ -33,6 +33,7 @@ NET_HTTP_A_DIRECTDEPS =				\
 	LIBC_CONV				\
 	LIBC_FMT				\
 	LIBC_LOG				\
+	LIBC_LOG_ASAN				\
 	LIBC_NEXGEN32E				\
 	LIBC_RUNTIME				\
 	LIBC_SOCK				\
diff --git a/test/libc/fmt/test.mk b/test/libc/fmt/test.mk
index 2f03bac9..d917a7b8 100644
--- a/test/libc/fmt/test.mk
+++ b/test/libc/fmt/test.mk
@@ -26,6 +26,8 @@ TEST_LIBC_FMT_DIRECTDEPS =				\
 	LIBC_MEM					\
 	LIBC_NEXGEN32E					\
 	LIBC_RUNTIME					\
+	LIBC_LOG					\
+	LIBC_LOG_ASAN					\
 	LIBC_STDIO					\
 	LIBC_STR					\
 	LIBC_STUBS					\
diff --git a/test/libc/runtime/test.mk b/test/libc/runtime/test.mk
index f7cc408f..c72e7c6d 100644
--- a/test/libc/runtime/test.mk
+++ b/test/libc/runtime/test.mk
@@ -35,6 +35,7 @@ TEST_LIBC_RUNTIME_DIRECTDEPS =					\
 	LIBC_RUNTIME						\
 	LIBC_STDIO						\
 	LIBC_LOG						\
+	LIBC_LOG_ASAN						\
 	LIBC_STR						\
 	LIBC_STUBS						\
 	LIBC_SYSV						\
@@ -62,6 +63,12 @@ $(TEST_LIBC_RUNTIME_OBJS):					\
 	DEFAULT_CCFLAGS +=					\
 		-fno-builtin
 
+ifeq (,$(MODE))
+$(TEST_LIBC_RUNTIME_OBJS):				\
+		OVERRIDE_CFLAGS +=			\
+			-fsanitize=address
+endif
+
 o/$(MODE)/test/libc/runtime/getenv_test.com.runs:		\
 		o/$(MODE)/test/libc/runtime/getenv_test.com
 	@HELLO=THERE build/runit $@ $<
diff --git a/third_party/zlib/zlib.mk b/third_party/zlib/zlib.mk
index 81c6ac40..9d29c102 100644
--- a/third_party/zlib/zlib.mk
+++ b/third_party/zlib/zlib.mk
@@ -57,12 +57,6 @@ o/$(MODE)/third_party/zlib/adler32.o:			\
 			-ffunction-sections		\
 			-fdata-sections
 
-ifeq (,$(MODE))
-$(THIRD_PARTY_ZLIB_A_OBJS):				\
-		OVERRIDE_CFLAGS +=			\
-			-fsanitize=address
-endif
-
 THIRD_PARTY_ZLIB_LIBS = $(foreach x,$(THIRD_PARTY_ZLIB_ARTIFACTS),$($(x)))
 THIRD_PARTY_ZLIB_SRCS = $(foreach x,$(THIRD_PARTY_ZLIB_ARTIFACTS),$($(x)_SRCS))
 THIRD_PARTY_ZLIB_HDRS = $(foreach x,$(THIRD_PARTY_ZLIB_ARTIFACTS),$($(x)_HDRS))
diff --git a/tool/tags/tags.mk b/tool/tags/tags.mk
index 3f544c40..d02e1b22 100644
--- a/tool/tags/tags.mk
+++ b/tool/tags/tags.mk
@@ -70,6 +70,5 @@ o/$(MODE)/tool/tags/%.com.dbg:			\
 	@$(APELINK)
 
 .PHONY: o/$(MODE)/tool/tags
-o/$(MODE)/tool/tags:				\
-		$(TOOL_TAGS_BINS)		\
-		$(TOOL_TAGS_CHECKS)
+o/$(MODE)/tool/tags:
+# TODO: Why isn't tags.h.inc being generated?