diff --git a/Makefile b/Makefile
index 9afdf658..ac3034c9 100644
--- a/Makefile
+++ b/Makefile
@@ -117,30 +117,36 @@ CMAKE_PARAMS = -DZSTD_BUILD_CONTRIB:BOOL=ON -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_B
 list:
 	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$' | xargs
 
-.PHONY: install uninstall travis-install clangtest gpptest armtest usan asan uasan
+.PHONY: install clangtest gpptest armtest usan asan uasan
 install:
 	@$(MAKE) -C $(ZSTDDIR) $@
 	@$(MAKE) -C $(PRGDIR) $@
 
+.PHONY: uninstall
 uninstall:
 	@$(MAKE) -C $(ZSTDDIR) $@
 	@$(MAKE) -C $(PRGDIR) $@
 
+.PHONY: travis-install
 travis-install:
 	$(MAKE) install PREFIX=~/install_test_dir
 
+.PHONY: gppbuild
 gppbuild: clean
 	g++ -v
 	CC=g++ $(MAKE) -C programs all CFLAGS="-O3 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror"
 
+.PHONY: gcc5build
 gcc5build: clean
 	gcc-5 -v
 	CC=gcc-5 $(MAKE) all MOREFLAGS="-Werror"
 
+.PHONY: gcc6build
 gcc6build: clean
 	gcc-6 -v
 	CC=gcc-6 $(MAKE) all MOREFLAGS="-Werror"
 
+.PHONY: clangbuild
 clangbuild: clean
 	clang -v
 	CXX=clang++ CC=clang $(MAKE) all MOREFLAGS="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation"
@@ -227,7 +233,7 @@ msan: clean
 	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer" HAVE_LZMA=0   # datagen.c fails this test for no obvious reason
 
 msan-%: clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-fno-sanitize-recover=all -fsanitize=memory -fno-omit-frame-pointer" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) HAVE_LZMA=0 $*
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=memory -fno-omit-frame-pointer" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) HAVE_LZMA=0 $*
 
 asan32: clean
 	$(MAKE) -C $(TESTDIR) test32 CC=clang MOREFLAGS="-g -fsanitize=address"
@@ -236,7 +242,7 @@ uasan: clean
 	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=address,undefined"
 
 uasan-%: clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-Og -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=address,undefined" $(MAKE) -C $(TESTDIR) $*
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=address,undefined" $(MAKE) -C $(TESTDIR) $*
 
 tsan-%: clean
 	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=thread" $(MAKE) -C $(TESTDIR) $* FUZZER_FLAGS=--no-big-tests
diff --git a/tests/zstreamtest.c b/tests/zstreamtest.c
index f16cc4b0..9b2b8eaf 100644
--- a/tests/zstreamtest.c
+++ b/tests/zstreamtest.c
@@ -1540,7 +1540,7 @@ int main(int argc, const char** argv)
     int proba = FUZ_COMPRESSIBILITY_DEFAULT;
     int result=0;
     int mainPause = 0;
-    int bigTests = 1;
+    int bigTests = (sizeof(size_t) == 8);
     e_api selected_api = simple_api;
     const char* const programName = argv[0];
     ZSTD_customMem const customMem = { allocFunction, freeFunction, NULL };