diff --git a/tests/lib/c_lib/common/prj.conf b/tests/lib/c_lib/common/prj.conf
index 331c19559db..0542b6a4ed5 100644
--- a/tests/lib/c_lib/common/prj.conf
+++ b/tests/lib/c_lib/common/prj.conf
@@ -3,3 +3,4 @@ CONFIG_TEST_USERSPACE=y
 CONFIG_ZTEST_FATAL_HOOK=y
 CONFIG_MINIMAL_LIBC_NON_REENTRANT_FUNCTIONS=y
 CONFIG_MINIMAL_LIBC_RAND=y
+CONFIG_POSIX_C_LANG_SUPPORT_R=y
diff --git a/tests/lib/c_lib/common/testcase.yaml b/tests/lib/c_lib/common/testcase.yaml
index 40a33afe0cf..4d184b9536f 100644
--- a/tests/lib/c_lib/common/testcase.yaml
+++ b/tests/lib/c_lib/common/testcase.yaml
@@ -13,8 +13,6 @@ tests:
       - CONFIG_MINIMAL_LIBC=y
       - CONFIG_MINIMAL_LIBC_NON_REENTRANT_FUNCTIONS=y
       - CONFIG_MINIMAL_LIBC_RAND=y
-      - CONFIG_COMMON_LIBC_ASCTIME_R=y
-      - CONFIG_COMMON_LIBC_CTIME_R=y
   libraries.libc.common.newlib:
     filter: CONFIG_NEWLIB_LIBC_SUPPORTED
     min_ram: 32