diff --git a/collectors/cgroups.plugin/cgroup-network.c b/collectors/cgroups.plugin/cgroup-network.c
index d4f9900613..d01065422d 100644
--- a/collectors/cgroups.plugin/cgroup-network.c
+++ b/collectors/cgroups.plugin/cgroup-network.c
@@ -230,7 +230,6 @@ static struct ns {
 };
 
 int switch_namespace(const char *prefix, pid_t pid) {
-    if(!prefix) prefix = "";
 
 #ifdef HAVE_SETNS
 
diff --git a/tests/profile/benchmark-line-parsing.c b/tests/profile/benchmark-line-parsing.c
index c07d1d857b..1d47cc83a5 100644
--- a/tests/profile/benchmark-line-parsing.c
+++ b/tests/profile/benchmark-line-parsing.c
@@ -643,11 +643,6 @@ void main(void)
     total_active_file_hash = simple_hash("total_active_file");
     total_unevictable_hash = simple_hash("total_unevictable");
 
-    // cache functions
-    (void)simple_hash2("hello world");
-    (void)strcmp("1", "2");
-    (void)strtoull("123", NULL, 0);
-
   unsigned long i, c1 = 0, c2 = 0, c3 = 0, c4 = 0, c5 = 0, c6 = 0, c7;
   unsigned long max = 1000000;