diff --git a/tests/lib/mem_alloc/testcase.yaml b/tests/lib/mem_alloc/testcase.yaml
index ad094595b7e..b754571a1f0 100644
--- a/tests/lib/mem_alloc/testcase.yaml
+++ b/tests/lib/mem_alloc/testcase.yaml
@@ -1,5 +1,5 @@
 tests:
-  libraries.libc.minimal:
+  libraries.libc.minimal.mem_alloc:
     extra_args: CONF_FILE=prj.conf
     arch_exclude: posix
     platform_exclude: twr_ke18f
diff --git a/tests/lib/sprintf/testcase.yaml b/tests/lib/sprintf/testcase.yaml
index 7457e0c1572..9afab71cbfb 100644
--- a/tests/lib/sprintf/testcase.yaml
+++ b/tests/lib/sprintf/testcase.yaml
@@ -1,4 +1,4 @@
 tests:
-  libraries.libc:
+  libraries.libc.sprintf:
     filter: not CONFIG_SOC_MCIMX7_M4
     tags: libc