diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 2ff0ebf82..39631cdae 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -831,7 +831,6 @@ component_test_check_params_functionality () {
     scripts/config.pl full # includes CHECK_PARAMS
     # Make MBEDTLS_PARAM_FAILED call mbedtls_param_failed().
     scripts/config.pl unset MBEDTLS_CHECK_PARAMS_ASSERT
-    scripts/config.pl unset MBEDTLS_MEMORY_BUFFER_ALLOC_C
     # Only build and run tests. Do not build sample programs, because
     # they don't have a mbedtls_param_failed() function.
     make CC=gcc CFLAGS='-Werror -O1' lib test
@@ -1049,7 +1048,7 @@ component_test_m32_o0 () {
     # Build once with -O0, to compile out the i386 specific inline assembly
     msg "build: i386, make, gcc -O0 (ASan build)" # ~ 30s
     scripts/config.pl full
-    make CC=gcc CFLAGS='-O0 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32'
+    make CC=gcc CFLAGS='-O0 -Werror -Wall -Wextra -m32 -fsanitize=address' LDFLAGS='-m32 -fsanitize=address'
 
     msg "test: i386, make, gcc -O0 (ASan build)"
     make test
@@ -1127,7 +1126,6 @@ component_test_have_int64 () {
 component_test_no_udbl_division () {
     msg "build: MBEDTLS_NO_UDBL_DIVISION native" # ~ 10s
     scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # too slow for tests
     scripts/config.pl set MBEDTLS_NO_UDBL_DIVISION
     make CFLAGS='-Werror -O1'
 
@@ -1138,7 +1136,6 @@ component_test_no_udbl_division () {
 component_test_no_64bit_multiplication () {
     msg "build: MBEDTLS_NO_64BIT_MULTIPLICATION native" # ~ 10s
     scripts/config.pl full
-    scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # too slow for tests
     scripts/config.pl set MBEDTLS_NO_64BIT_MULTIPLICATION
     make CFLAGS='-Werror -O1'